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Practice makes perfect. Practice math at IXL.com

  • Add protractor
  • Random angle(s)
  • Equal angle(s)

Interactively teach student various type of angles and use of protractor.

  • Demonstrate to the students What obtuse angles are.
  • Demonstrate to the students What acute angles are.
  • Demonstrate to the students What supplementary angles are.
  • Demonstrate to the students What complimentary angles are.
  • Demonstrate to the students How to use a protractor.
  • Demonstrate to the students How angles are created with intersecting lines.
  • Demonstrate to the students What right angles are, what equal angles are.

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Mathematical Demonstrations

Welcome to interactive mathematics teaching resources section.Below are the current set of activities with a brief description, click a launch button to start one.

Once launched you can access further information by clicking the info icon which is located in the top menu bar. Most activities also have video instructions, click the video icon if present to view.

New activities and improvements are made regularly so remember to check back for updates.

clock screenshot

Time, Angles & Fractions

This activity has many uses. Display the current time analogue or digital. The clock hands can be dragged to show different times.

The clock can also demonstrate angles and has been updated for fractions and percentages too.

fraction wall screenshot

Fractions Wall

This activity can be used to explore equivalence between fractions, decimals and percentages.

Fractions are represented by layers of bricks which can be turned on or off. It easy to show why for example that one half is equal to two-quarters or four-eighths.

two clocks screenshot

This clock activity is great for teaching about time problems. The first clock shows the start time, while the second clock shows the end time. 

The duration between the times can be automatically calculated. Either clock or the duration can be hidden.

basic angles screenshot

Basic Angles

Learn to recognise acute, obtuse, reflex and right angles.

Create and investigate problems involving complementary or supplementary angles, intersecting lines and angles at a point. Angles can be automatically displayed or measured using a protractor.

percentage fraction decimals grid screenshot

Percentage Fraction Decimal Grid Updated!

Divide a square or circle up into a number of parts.

The slices or rectangles can be painted various colors and these colors then represented as either decimals, fractions or percentages.

classroom timer screenshot

Classroom Timer

The classroom timer, is a general purpose countdown timer for lessons. It can be used as an effective way to get a class to focus on the task at hand.

It has two mode, the 'seconds mode' for very quick tasks of less than 60 seconds. The 'minutes mode' is used for longer activities of up to an hour.

random spinners screenshot

Random Spinners

The spinners can be used simply to generate random numbers. Or try the built in activities, the first a game requires children to use their skills to reach a target number by adding, subtracting or multiplying the spinner values.

With more advanced activities requiring calculation and/or algebraic substitution using the spinner values.

polygon explorer screenshot

Polygon Explorer

Create and manipulate polygons, examine how the interior and exterior angles change as the number of sides increase.

Drag vertices, use a protractor or ruler to measure angles and length properties

times tables screenshot

Fish Times Tables

Learning the times tables is extremely important, this activity can quickly demonstrate any tables value.

The visual representation allows children to grasp very quickly that multiplication is commutative i.e 3x4 is the same as 4x3.

fractal screenshot

Fractal Explorer

The fractal explorer shows how a very simple pattern, when repeated can produce an incredible range of images. From organic tree like structures to rigid geometric forms.

Fun to use and lots of mathematical concepts involved.

sieve of eratosthenes screenshot

Sieve of Eratosthenes

Named after the Greek Mathematician. This classic method of finding prime numbers is also great for teaching about factors and multiples.

The visnos sieve allows for multi colored squares this allows identification of any numbers prime factors.

addition subtraction facts screenshot

Addition & Subtraction Facts

Teaches addition and subtraction facts up to twenty using animated penguins.

The penguins jump between two icebergs to show addition facts for the given total. For subtraction facts the penguins dive off the iceberg into the water below.

A number line represents the number facts.

starter calculate percentage decimal fraction screenshot

Starter Calculate Percent Fraction Decimal

A spinner creates a random number. The class then have one min to multiply the value by percentages ,fractions or decimal values.

Makes a great lesson starter to get brains active. Also provides discussion for various ways of getting the answers.

number explorer screenshot

Number Explorer

Visually divide numbers and display calculation to show the remainder, fraction or decimals value.

Test if a number is a triangular or square. Run automated tests for divisibility, factor pairs or prime factors.

pi screenshot

This interactive demonstration shows firstly how pi relates to the circumference of a circle. This is achieved using a regular polygon approximation, the closed polygon is opened to reveal this magical number.

The area of a circle π r 2 is also explained using animated slices.

Educational Games » Teacher Tools » Virtual Manipulatives » Geometry Manipulatives » Protractor

This interactive online protractor makes it easy for students to learn how to measure angles.

Toggle the degree function off or on by clicking the button in the top right hand corner. To view only an angle tool, toggle the protractor off by clicking the button on the upper left hand side. Change the angle by clicking and dragging the dotted circles as desired.

When students are learning to use a protractor, it can be helpful to use the degree function. Then, as they learn to use the tool, you can have them try turning it off. They can always turn the function back on to check their work.

Here are a few ways to use the interactive online protractor:

  • Ask students to create and measure 5 acute angles using the protractor.
  • Ask students to create and measure 5 obtuse angles using the protractor.
  • Ask students to create specific angles without using the degree function. For example, create an angle that measures 132 degrees.

To learn more about angles , explore printables on classplayground.com. For more interactives on geometry visit mathmine.com .

Teaching Angles: 5 Activities for your Classroom

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Teaching angles can be challenging with students seeming to grasp the idea one day and then lose it the next day.

Below are a few activities I use to keep students’ understanding of angles topped up.

Door Angles

Using strong white tape suitable for the floor, show the angles to which the door may be opened like in the picture. This is a great way of helping students interact with angles visually everyday![/vc_column_text][/vc_column][vc_column width=”1/2″][vc_single_image image=”11455″ img_size=”full”][/vc_column][/vc_row][vc_row][vc_column][vc_column_text]

Angles in a Name

Teaching right angles can be a good place to start when introducing angles to students for the first time. Ask students to write their names in block capitals using a ruler on a blank piece of A4. Then ask them to find the angles within the letters in their names. So the rights angles in “T” for example.

You can use the name of the school to make a brilliant wall display, celebrities or topical events.

Angles BINGO

No matter what topic you are teaching, Bingo is great. On Pinterest there are thousands of free BINGO worksheets on Angles that you can download, print, and have fun with your class.

Masking Tape on Tables

Tape random straight lines across students’ tables to create lots of angles where the tape overlaps. Then ask your students to sit around the table with a marker, and encourage them to classify as many angles as they could. After classifying angles, your pupils can then move on to measuring them. See if they can spot any relationships between angles.

Time for Angles

Using your classroom clock ask at various points during the day what the time it is. Then ask them what kind of angle is formed between the two hands: acute, right, reflex, or obtuse. If they can easily tell the type of the angle, you can then ask them to estimate the size.

Geometry with Emile

We of course believe in the impact Emile can make in your classroom. Try Geometry with Emile for free in your classroom and allocate an “Angles” assignment.[/vc_column_text][/vc_column][/vc_row]

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Interactive Triangles

Read about Triangles , and then play with them here. They rotate , too! So you can become familiar with them from all angles.

Note: the three angles of a triangle add to 180°

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Anchor Charts

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Teaching Angles, Angles, Angles!

By Mary Montero

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Anchor charts, notebooks, and activities for teaching angles in upper elementary. Includes task cards, games, and more too!

We finished up angles the other day, and I thought I would share the teaching angles anchor chart we used and a couple of activities we did.  This particular group is a group of 4th grade Talented and Gifted kids, so we did a quick, quick review!  I used my Interactive Math Journal resource from the brilliant and wonderful Runde’s Room !  Seriously, the Math Journal is one of the best purchases I’ve ever made on TpT!

Anchor charts, notebooks, and activities for teaching angles in upper elementary. Includes task cards, games, and more too!

Teaching Angles Anchor Charts and Notebooks

The kids made their foldable while I made the anchor chart.

Types of Angles and Measuring Angles Anchor Chart

NEW Teaching Angles Flipbook

If you’re looking for a new and engaging way to teach all things angles and take your review of identifying, measuring, drawing, and adding angles to the next level, then you need to see these angle flipbooks !

This flipbook acts as a mini interactive notebook that covers a variety of strategies relating to angles. The left hand side of each page helps to TEACH the focus skill, acting as a mini anchor chart that students interact with and complete. On the right hand side, students engage in identifying types of angles, measuring angles, calculating additive angles, drawing angles, and more!

The final section, ‘Put it All Together’ asks students to synthesize all skills in an engaging review of everything they have learned! 

identifying, measuring, drawing, and adding angles lesson flipbook

Angle Practice Activities

When we finished the foldable and reviewed of the types of angles, we talked about measuring angles and made a little chart to describe the steps of measuring angles.  We talked about labeling angles as well. Then, the kids made a shape on the left side of their math journals and started labeling and measuring angles… It was a really neat way to have them “prove” their thinking without having to do a worksheet.

Finally, the students drew their own shapes then identified angles (and types of line) and practiced measuring angles.

measuring angle activity

Angle Task Cards and Rotations

We use these angle task cards and additive angle task cards in our rotations. I created the cards so that they fulfilled all of the angle standards and it worked GREAT for review and differentiation!  I had three separate piles for them to work on so that they were all working on their appropriate level.

angle task cards

As a side note, this task card organization system has totally SAVED me this year!  You can read more about how I’m organizing my task cards HERE .

organizing task cards

Math rotations are also a great time to use Topple Blocks, so I created this angles Topple Blocks game too. If you’re new to using Topple Blocks, this post has instructions and a free elapsed time game too.

angle topple block jenga game

Mary Montero

I’m so glad you are here. I’m a current gifted and talented teacher in a small town in Colorado, and I’ve been in education since 2009. My passion (other than my family and cookies) is for making teachers’ lives easier and classrooms more engaging.

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Number Dyslexia

6 Manipulatives For Teaching Angles And Its Related Concepts

Please Note : This post may contain  affiliate links. Please read my disclosure  (link)  for more info.

Introduction

Many people essentially don’t have a particular liking for math and its concepts. Geometry, being a part of it, may fall under the same category of dislike for many students. However, if taught through viable ways like educational apps, following responsive websites, podcasts, using the right manipulatives, teaching approaches, etc; even a subject like geometry can become a favorite to many.

Manipulatives, being an integral part of learning geometry are of various types and sorts that can be used to teach angles. Therefore, in this post, we will be discussing the apt manipulatives to teach angles to students and how to benefit from them. Read more below.

Manipulatives to teach angles: How will it change the class environment

Manipulatives are of multiple types. Some of these are physical objects, while others are digital or online tools. Let’s have a look at them and undermine how these manipulatives can change the air of learning geometry in the classroom.

1. Physical Manipulatives

Physical manipulatives can be used to help students visualize and understand angles. Some common physical manipulatives that can be used to teach angles include protractors, rulers, and compasses.

2. Digital and Online Manipulatives

There are also a number of digital and online manipulatives that can be used to teach angles. These manipulatives can be found on websites, in apps, and even in video games. Some popular digital and online manipulatives for teaching angles include angle finders, angle measures, and angle games.

Way to use manipulatives to teach angles

When using manipulatives to teach angles, it is important to provide students with opportunities to explore and experiment. Students should be encouraged to try different manipulatives and to use them in different ways. It is also important to provide guidance and support as needed.

Here are some ideas for using manipulatives to teach angles:

  • Have students use a ruler and a compass to draw angles of different sizes.
  • Have students use an angle finder or measure to identify the angles in everyday objects (e.g., doorways, windows, furniture).
  • Play an angle game with students and challenge them to identify angles of different sizes.
  • Use a digital or online manipulative to help students visualize and understand angles.
  • Have students create their own angles using physical manipulatives.

With a variety of manipulatives available, there are many ways to teach angles. By providing opportunities for exploration and experimentation, students can learn about this important topic in a fun and engaging way.

Manipulatives to teach angles concepts to little learners

There are 8 interesting manipulatives that can help students who are on the quest to learn this vast, yet inevitable topic of angles.

1. Geoboard

Geoboard

Geoboard is a manipulative used by teachers to help students understand geometric concepts. They can be used to teach a variety of topics, including angles, area, perimeter, and fractions.

Geoboard is an important geometry manipulative because it allows students to physically manipulate objects and see the results of their actions. This kinesthetic learning style can be beneficial for students who struggle with abstract concepts. It is also versatile and can be used to teach a variety of topics. When teaching angles, for example, students can use geoboards to measure angles, create angle bisectors, and compare acute, obtuse, and right angles.

2. Angle Sticks

Angle sticks

There are many ways to teach angles, but one of the most effective is through the use of angle sticks. Angle sticks are simply two sticks that are placed together at one end to form an angle. By manipulating the angle sticks, students can easily visualize and understand various concepts related to angles.

Some of the key concepts that can be taught with angle sticks include:

  • Angles can be measured in degrees.
  • The size of an angle is determined by the amount of rotation needed to close the angle.
  • Angles can be classified as acute, obtuse, or right angles based on their size.
  • Complementary and supplementary angles have a special relationship.
  • Angles can be added and subtracted.

Angle sticks are a versatile and essential geometry manipulative that every teacher should have in their classroom. With a little creativity, they can be used to teach a wide variety of concepts related to angles.

3. Cuisenaire rods

Cuisenaire rods

Using these rods of different sizes helps in learning angles in a much simpler fashion. These rods, when put together, can make any two-dimensional shape. These rods have different size and colors to distinguish them easily. 

To teach angles using Cuisenaire rods,

  • start by introducing the concept of angles and explaining that they are measured in degrees.
  • Next, demonstrate how to measure angles using a protractor.
  • Finally, have students use Cuisenaire rods to create angles of their own and then measure them.

When introducing the concept of angles, be sure to explain that they are formed when two lines intersect.

4. K’NEX models

KN'NEX Models

These versatile tools teach angles in an easy manner. Primarily, it is used to familiarize students with common angles such as 45, 90, 120, 180, and 360 degrees. These angles are prominently used in all geometry problems. K’NEX models comprise two straight thin rods and a connector. The connector has 10 different joints where the rods can be fixed. In doing so, students can make any type of angle using the rods as turning mediums. For example, both the rods are right angle to each other and would make a 90 degrees angle. Similarly, when placed straight in a line, they form a 180 degrees angle.

5. Masking Tape

masking tape

All you need is a long whiteboard, some tape, and different color sketch pens for this activity. Using the tape, you can create intersecting lines on the whiteboard and mark the angles on the points when the lines cross each other. This would allow students to understand many angles in one place. 

Draw straight lines on the board, dividing it into many sections. Use different colored sketch pens to mark the angles at each intersection of the lines. For example, mark all the 90 degrees angles with red and all the 180-degree angles with blue. Then ask the students to use the tape to mark more lines on the board and calculate complex angles. The primary objective of this activity is to make students understand different types of angles, such as acute, obtuse, opposite, and corresponding. They would also have a thorough knowledge of reinforcing angles on a straight line that would always add up to 180 degrees. Simultaneously, all the angles around a single point on the board would add up to make 360 degrees angles.

6. Teaching Clocks

teaching clock

Large or mini clocks help teach angles in the classrooms. The hands of the clock form these angles. It teaches students the concept of time and the measurement of angles between the needles of the clock.

Every clock is divided into 12 equal intervals. The center at which both the needles are connected makes a 360-degree angle. The measure of each interval is 30 degrees. Place a clock at every table in the classroom. Ask students to change the time of the clock period and calculate the angle between the clock’s needles. To simplify it, tell the students to place the clock’s needles at 180 degrees to each other and ask them the time. Similarly, you can ask them what angle the needles make when the time is 3:15 or 3:30.

How can effective ways of using manipulatives can change the class environment?

Studies indicate that the use of manipulatives has a direct effect on the students’ learning. They don’t have to hold as much information in their working memory while using these techniques. This allows them to focus on the task more wherein the learning outcomes are result-driven. Here’s how manipulatives can change a class’s environment if taught effectively.

  • The use of manipulatives improves students’ mathematical reasoning and problem-solving skills.
  • Manipulatives help make abstract mathematical ideas concrete and easy to grasp.
  • These allow students to explore using a developmentally appropriate hands-on approach. 
  • Manipulatives help students to understand geometry and the different variants of angles conceptually. 
  • Through different tools, students receive knowledge and gain the confidence to raise questions in the practical learning session.
  • Thus, it provides students the concrete awareness of angles and the hands-on experience of actually touching and feeling manipulatives. Rather than looking at the angles symbolically on paper. 

There are a variety of ways to teach angles using manipulatives. By using new ways and techniques, one can easily explore and use objects, and they can develop a deeper understanding of angle measurement. Some common manipulatives that can be used to teach angles include protractors, compasses, triangles, and rulers.

When using these manipulatives, it is important to provide clear instructions and demonstrations. Students should also be given opportunities to practice measuring angles on their own. With some guidance and practice, one can merrily develop the skills needed to accurately measure angles.

Manpreet Singh

An engineer, Maths expert, Online Tutor and animal rights activist. In more than 5+ years of my online teaching experience, I closely worked with many students struggling with dyscalculia and dyslexia. With the years passing, I learned that not much effort being put into the awareness of this learning disorder. Students with dyscalculia often misunderstood for having  just a simple math fear. This is still an underresearched and understudied subject. I am also the founder of  Smartynote -‘The notepad app for dyslexia’, 

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Teaching Lines and Angles

hand forming angles

Geometry is one of my favorite things to teach in elementary. I always begin by teaching the kids how “geo” means earth and “metry” means to measure, so we are literally learning how to measure the earth! In this post I will be focusing on teaching lines and angles. Please see my other posts for Teaching Area and Perimeter, Measurement Conversions , and using The Greedy Triangle to teach about polygons.

Geometric Vocabulary

I teach the math vocabulary with physical movements. We learn all of the terms and movements below then play Simon Says to practice. “Simon Says show a ray” etc. The kids love it and they remember the terms!

  • Line goes on forever- we hold out both arms with hands extended
  • Segment is a piece of a line- we hold out both arms with fists
  • Ray – hold out both arms with one hand extended and one hand in a fist
  • Point- hold out fist
  • We also make parallel, perpendicular, and intersecting lines with our arms.
  • We also demonstrate acute, obtuse, and right angles.

Vocabulary videos online for teaching lines and angles:

  • Flocabulary video “Types of Angles”
  • Flocabulary Parallel and Perpendicular Lines
  • Brainpop Jr: Points, Lines, Segments, Rays
  • Brainpop: Angles
  • Math Antics: Points, Lines, and Planes
  • Number Rocks: Parallel, Perpendicular and Intersecting Lines
  • Math Antics: Angle Basics
  • Math Antics: Angles and Degrees

Books for introducing geometric vocabulary

Sir Cumference and the Great Knight of Angleland

Lines, Segments, Rays, and Angles

Angle Manipulatives

See my page AngLegs for information about and teaching resources for using these amazing angle manipulatives.

Art For Teaching Lines and Angles

I believe the original source for this Name Geometry picture was Teacher Created Resources, but I can’t find the original. It could easily be made using rulers and would make a great display!

Name geometry example

We have also made lines and angles in class using Wikki Stix (yarn coated in wax.) They are bendable, easy and fun to use, and reusable! This is perfect for a math center. Create Teach Share has free printables on TPT for using with these.

teaching angles online

Craft sticks work too!

teaching angles online

Or, if you want to incorporate some fun with food, you can use this lesson from FlapJack to use pretzel sticks and marshmallows.

Another fun idea is to use washi (or masking) tape to make angles on your students’ desks or individual white board, then have them use dry erase markers to identify and/or measure the angles.

teaching angles online

This Angle Art lesson from In the Playroom teaches kids how 360 degrees makes up a circle. I love to follow it up by showing them using clock manipulative how the hands on a clock form angles. It always blows their mind 🙂

Missing Angles Art Activity

Create a Geometry Star with this TPT freebie that reviews point, line, line segment, endpoints, angles, and ruler use.

Additional Practice

  • Free Lines, Rays, and Angles Lesson for 4th Grade. This lesson from Teaching Sweet Shoppe includes a lesson plan, vocabulary cards, interactive notebook pages, science and writing integration, Powerpoint, practice page, center and RTI ideas, a quiz and homework! This is an amazing TPT find.
  • Lines and Angles Mix and Mingle free class activity- 11 object name cards to match with 11 definitions for 4th grade vocabulary
  • Free Measuring Angles With a Protractor task cards
  • Free Printable Lines and Angles Posters
  • I Have Who Has Angles game (free printable)
  • Free Math Test Prep Review: Measurement, Angles, Line Plots, Area and Perimeter
  • Lines and Angles Tic Tac Toe choice board
  • Free QR codes Lines, Angles, and Shapes

Online Games

Estimating Angles from Nrich

Alien Angles at Math Playground

Line Shoot at Sheppard Software

Projects and Enrichment

Geometric Town Project (FREE) by Classy Colleagues

Geometry Enrichment Choice Board for 4th Grade by Simon Says School. Addresses standards 4.G.A.1, 2, and 3 ($1 on TPT)

4th Grade Angles and Measurement Enrichment Projects by Gina Kennedy for standards 4.MD.C.5, 4.MD.C.5a, 4.MD.C.5b, 4.MD.C.6, 4.MD.C. 7. Nine creative and differentiated projects including creating poetry, writing an ABC book and a directed angle drawing.  ($2.50 on TPT)

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19 Math Activities to Practice Identifying & Measuring Angles

January 30, 2023 //  by  Rebecca Przy

Are your students intimidated by angles or the thought of using a protractor? Any math concept or tool can be a bit scary for first-time learners, but it doesn’t have to be! Planning educational and engaging activities can help to increase the fun and alleviate the fear. 

Below is a list of 19 math activities that provide great practice for identifying and measuring angles in your math class.

1. Draw a Space Rocket

Mixing math with cool things (like space rockets) can make the learning experience a lot more fun! Your kids can use a standard ruler and protractor to measure and construct the correct lines and angles to form this geometric space rocket.

Learn More: Teachers Pay Teachers

2. Line Art Angle Measuring

Lots of beautiful artwork consists of angles! Therefore, an art project is a great opportunity to practice measuring angles. Here are some free line art worksheets your kids could try. After completing the lines, your kids can practice measuring some of the angles.

Learn More: It’s Always Autumn

3. Tape Angles Activity

This collaborative activity is a good pick for both angle identification and measuring practice. You can start by making a right angle with tape. Your kids can then take turns adding tape pieces to form different lines. Finally, they can add notes about the angle types and degree measurements.

Learn More: Mathemativity

4. Wikki Angles

Wikki Stix is bendable pieces of yarn that have been coated in wax. They can make great material to practice constructing angles with. After estimating the angle’s size by bending the Wikki Stix, your kids can check their accuracy using a protractor.

Learn More: Instagram

5. Read “Sir Cumference And The Great Knight of Angleland”

I genuinely didn’t think you could combine a fun, fictional story with a math lesson- until I found this book! The main character, Radius, goes on an adventure through a maze of angles where he must use a special medallion (a trusty protractor) to solve different angle puzzles.

Learn More: Amazon

6. Paper Plate Protractor

Your kids can make their own special, angle-solving medallion from a paper plate. I suggest using a protractor template to make the degree marks so that their homemade creations can be as accurate as possible.

Learn More: Learning Ideas Grades K-8

7. Snowflake Angle Worksheet

Combining colors and snowflakes can make for a fun-angle activity. Your kids must trace the correct colors on each snowflake for right, acute, and obtuse angles. They will have beautifully colored art pieces by the end of it!

Learn More: Deceptively Educational

8. Snowflake Craft

teaching angles online

Crafting snowflakes with popsicle sticks can also make a great, educational angle activity. As you and your kids build the snowflake shape, you can ask them questions about the types of angles they are creating. Add some glue to make these snowflakes stick!

9. Straw Angles

You can teach a hands-on lesson about angles with the help of straws. Your kids can take two straws each, stick one end into the other, and follow your angle-making demonstrations. You can make straight, obtuse, acute angles, and more!

Learn More: Alan Graham

10. Identifying & Comparing Angles

This pre-made set of 28 task cards can help your kids practice identifying and comparing angle sizes. What is the angle size? Is it bigger or less than 90°? They can place a mini clothespin on their answer and record it on an answer sheet. 

Learn More: A+ Teaching Resources

11. Playground Angles

There are angles all around us! You can play this angle-finding activity with your kids at the playground. They can draw the outlines of the different playground rides and then identify the various angles that exist within them. 

Learn More: Number Dyslexia

12. Roundup Angle-Making

This angle activity can encourage collaboration between students as they try to align themselves to form specific angles. You can gather your kids in a circle to start, and then call out angles for them to try forming!

13. Simon Says

You can add angles to the classic game of Simon Says for a fun, mathematical bonus! Simon says, “Make an obtuse angle”. Simon says, “Make a right angle”. You can increase the difficulty by getting specific about the angles in degrees.

Learn More: Create Teach Share

14. Blindfold Angle Game

Here’s a fun classroom game you could try! Your blindfolded kids would be given specific instructions. For example, this can include getting them to rotate a 45°. Ultimately, the instructions will lead to an end goal such as locating an item or throwing a ball.

Learn More: Mr. Hill’s Musings

15. Angles Animation

Scratch is an awesome resource for teaching kids basic coding skills in their free programming language. Your kids can use this online platform to create animation videos that demonstrate what they know about angles.

16. Measuring Angles – Digital/Print Activity 

This angle measures activity has both a digital and print version, which can make it a great option for both in-class and online learning. In the digital version, your kids can use a digital protractor to find the measurements of provided angles.

Learn More: Math With Meaning

17. Online Angle Activity

teaching angles online

Here’s a free, online activity for your kids’ practice. There are a number of questions that use a digital protractor and can give your kids a better understanding of angle sums and relationships.

Learn More: Educational Games For Kids

18. Estimating Angles

teaching angles online

Protractors for students can be an important tool, but there is also value in learning how to estimate the measurement of angles. This 4-level online resource can be great for practicing angle size estimations. 

Learn More: NRICH

19. Angle Anchor Charts

Creating anchor charts with your kids can be a great learning activity and can provide a handy resource for your kids to look back on. You can create your own, or go to the link below to check out some pre-made anchor chart templates. 

Learn More: The Classroom Community Copilot

Online Protractor

This is a transparent online protractor, you can easily measure the angle of any object around you, and it helps you measure angles in a picture, taking a picture and uploading it, then dragging the midpoint of the protractor to the vertex of the angle, our virtual protractor is very accurate, it can zoom in, zoom out, rotate and move position.

How to use this online protractor ?

  • You can measure the angle of any actual object directly on your screen
  • If you want to move the protractor, drag the midpoint of it.
  • If you want the protractor size to be smaller or larger, you can change the protractor radius
  • You can rotate the protractor just like the traditional protactor
  • Click the edge outside of the protractor will add a pushpin on it
  • Placing two pushpins will show the degrees of that angle
  • Double click on the pushpin will remove it, drag it to move its position
  • These actions can also be done in the buttons inside the control panel
  • Choose a picture as the background, the background can be zoomed in and out, and our protractor can measure directly on the picture
  • You can drag and drop a picture into the background.
  • Press Ctrl+V can paste the image to the background.
  • You can download your design and share it with others, this is free
  • The browser on the mobile phone does not support drag and drop operation, just use the buttons
  • If you want a bigger workspace, try the full screen mode(F11)

online protractor

The story of our protractor

Every time I want to measure the angle, I always can't find the protractor. After I tried other peoples's virtual protractors on the Internet, I didn't feel very satified, so I decided to created a more practical online protractor by myself. This idea was in my mind, I thought about it for a whole year, and then I took some time to make it when I was free.

Such a convenient and useful thing, I must share it with you all, so we're all lucky today, here is a handy and useful online protractor. Now, we can measure the angle of anything around us anytime, anywhere using our laptop, computer, tablet or smartphone.

If you want to measure something that is small, just place it on the screen and measure it directly; If you want to measure something bigger, you can take a picture and upload it, then move the center point of the protractor to measure its angle.

Use camera or image to measure angle

You can take picture of any object that you would like to measure, for example, a car, road, house, stairs or a mountain, the protractor is transparent, after you uploaded the image, it will be display in the background. then, you can drog the protractor or add pushpins to figure out the degrees of angles, upload file only accept image file in formats of jpg, gif, png, svg, webp .

In the control panel, if the background color is close to the protractor, and it's not easy to distinguish, you can change a protractor color to see it clearly. Also you can move it, shrink or enlarge the size of protractor, according to your needs.

Measure the angle on the picture

Angles and Degrees

  • Angles are measured in degrees, the symbol for degrees is a little circle °
  • The full circle is 360° (360 degrees)
  • A half circle or a straight angle is 180°(180 degrees)
  • A quarter circle or a right angle is 90°(90 degrees)

How to measure an angle with a protractor

  • Place the midpoint of the protractor on the vertex of the angle.
  • Line up one side of the angle with the zero line of the protractor (where you see the number 0).
  • Read the degrees where the other side crosses the number scale.
  • Take care to read from the right set of numbers. A protractor has two sets of numbers: one set goes from 0 to 180, the other set from 180 to 0. Which one you read depends on how you place the protractor: place it so that one side of the angle lines up with one of the zeros, and read that set of numbers.

What do you think of this protractor ?

Thanks for your comments, I've read these. Rotate the protractor -- I've added it. Larger work space -- I've enlarged it Paste the image to the background(Ctrl+V) -- I've added it. Thank you all for your support and sharing, enjoy to use it, it's free.

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Online rulers

  • Online ruler : The most accurate size ruler on the web.
  • Metric scale ruler : variable scale ruler with metric units(cm, m, km)
  • Imperial scale ruler : variable scale ruler with imperial units(in, ft, yd, mi)

Visit this page on your smartphone

This transparent online protractor is 100% self-developed by us, copyright © www.ginifab.com , all rights reserved.

Disclaimer: Use of the protractor within this website is free. Whilst every effort has been made to ensure the accuracy of the protractor published within this website, you choose to use them and rely on any results at your own risk. We will not under any circumstances accept responsibility or liability for any losses that may arise from a decision that you may make as aresult of using this protractor. Similarly, we will not be requesting a share of any profits you may make as a result of using the protractor.

Ruler.Digital

Online Protractor for Free

Scan qr code and open it on your phone, to provide an easy-to-use, online ruler for anyone who needs one, regardless of device..

teaching angles online

Online Protractor

In school we learned how to use a physical protractor to measure angles. However, this can be difficult if you don’t have a physical protractor handy.  That’s where the Online Protractor App comes in!  With this app, you can easily measure angles or compare two angles without worrying about finding a physical protractor.

What is the online protractor?

The Online Protractor is a free app that allows you to measure angles and compare two angles.  You can also create a PDF worksheet with your custom background image.

How to use the online protractor

If you need to measure an angle, find the degrees of the angle, or compare two angles, the Online Protractor app is for you.  It’s free and works on any device.  You can also create a PDF worksheet with your custom background image.

To use the Online Protractor, simply click and drag the protractor to rotate it. Then, click on the arc of the protractor to set the degree measurement. You can also click on the “Compare” button to compare two angles.

Customizing the Online Protractor

If you need to measure an angle or compare two angles, the Online Protractor is a great free tool to use. You can also customize the tool to work with your own background image. Here’s how: 

1. Find an image to use as the background for your protractor. 2. Right-click on the image and choose “Open image in new tab” from the drop-down menu. 3. In the new tab that opens, right-click the image again and choose ‘Copy Image Address’. 4. Close the new tab and return to the online protractor. 5. Paste the image address into the “Background Image URL” text box at the bottom of the tool and press enter. 6. The image will now appear as your background when you start measuring angles!

The different types of angles

There are many different types of angles and each type has its own unique properties.  Here are some of the most common types of angles:

Sharp Angles: Sharp angles measure less than 90 degrees.  They are often used in mathematics and geometry, as well as in everyday life.  For example, a right angle is an acute angle.

Obtuse Angles: Obtuse angles measure more than 90 degrees but less than 180 degrees.  They are often used in architecture and engineering, as well as in art and design.  For example, an obtuse angle can be used to create a sense of depth in a painting.

Reflex Angles: Reflex angles measure more than 180 degrees but less than 360 degrees.  They are often used in navigation and surveying, as well as in sports and recreation.  For example, a football field is marked with reflex angles to indicate the end zones.

Right Angles: Right angles measure exactly 90 degrees.  They are often used in construction and carpentry, as well as in mathematics and geometry.  For example, it takes a right angle to form a square or rectangle.

Right Angles: Right angles measure exactly 180 degrees.

Measuring angles

To use the online protractor, click and drag the protractor to rotate it.  Then click on the two points between which you want to measure the angle.  The protractor automatically displays the angle measurement in degrees.

You can also use the Online Protractor to compare two angles.  To do this, first click on one of the angles you want to compare.  Then hold down the Shift key and click on the other corner.  The protractor then displays the difference between the two angles.

So whether you want to measure an angle, measure the degree, or compare two angles, the online protractor is the perfect tool for the job!

Measuring angles with the online protractor

To use the online protractor, click and drag the protractor to rotate it.  Then click on the two points between which you want to measure the angle.  The app automatically calculates and displays the degrees of the angle.

You can also use the Online Protractor to compare two angles.  To do this, first drag one of the protractors to rotate it.  Then click on the two points between which you want to measure the angle.  Then drag the other protractor and click on the two points.  The app will then display both angles and indicate whether they are equal or not.

Finally, you can create a PDF worksheet with your custom background image.  To do this, first click on the “Create PDF” button.  Then select your image and enter a title for your worksheet.  The app then generates a PDF that you can print and use for offline measurements.

How to compare two angles

Want to compare two angles?  Whether you need to find the degree of the angle or just want to see how two angles are facing each other, this app is for you.  Best of all, it’s free and works on any device.  In addition, you can create a PDF worksheet with your custom background image.  Let’s start!

This app is a great tool for anyone who needs to measure angles or compare two angles.  It’s free, easy to use and works on any device.  You can also create a PDF worksheet with your custom background image, which makes it even more convenient.  Whether you are a student trying to complete a homework assignment or a professional working on a project, this app is sure to come in handy.

teaching angles online

How to Read a Ruler in Inches/cm/mm?

  • Choose your preferred method of measurement (inches, cm, or mm)
  • Place the ruler on the object you wish to measure.
  • Align the zero mark on the ruler with one end of the object.
  • Read the measurement at the other end of the object.
  • Convert units as necessary.

teaching angles online

To help people get accurate measurements, whether they are working on a project at home or in the office.

I love our online ruler, very convenient., we help people stay productive and efficient by providing them with a handy and accurate on-screen online ruler., frequently asked questions.

People also ask

Yup, we love to make things easier for you. Whether you are a professional or an amateur at measuring, with Ruler.digital you’ll always have an online ruler ready to use when you need it.

Our online ruler is always available to you. You don’t need to download anything and it’s perfect for all devices, especially mobile devices. With our digital ruler, you can measure in both inches and cm/mm. Easy as pie!

You can use Ruler.Digital with any device that has a browser, even mobile devices such as phones or tablets. Simply visit Ruler.Digital on your device’s browser and you will find the ruler to start using it.

Ruler.digital is available on your phone, tablet and desktop computer so it will work no matter what device you are using. Just type “ruler.digital” in your browser and the tool will pop up.

We provide two types of units: inches and cm/mm. The measurement on the ruler can be anywhere from 1 inch (1 inch = 2.54 cm) to 12 inches (12 inches = 30.48 cm).

Put your device close to the item you want to measure, swipe from left to right on the ruler and read the number on the item.

1 inch equals 2.5 cm, and 1 cm equals 0.39 inches.

The mm in ruler is a metric way to measure length. Just like inches, one millimeter is 1/1000 of a meter. The metric system is based on units of 10 (millimeters, centimeters, meters) so getting into the habit should be easy.

Our ruler is an accurate digital on-screen ruler used to measure distances in inches and cm/mm.

A cm is equivalent to 10 millimeters.

It is exactly the same as a ruler in inches, but in cm and mm. Our ruler can be used with any device, no matter if it is a computer, tablet or phone.

Yes! We understand that sometimes you need something more tactile and permanent. So our ruler can be exported as a PDF or PNG, then the user prints out the ruler on paper or plastic.

We have an online protractor that is accurate and precise. There are also many other tools for drawing, measuring and more!

Ruler.digital offers you a wide range of web-based and mobile protractors. You can take measurements on any device and use the ruler to calculate dimensions, angles, slopes and more — straight from your browser without the need for additional apps or plugins!

Ruler.digital is designed to be used as a virtual protractor, which means that it can be attached anywhere on any screen. You just need to enter in your desired angle, drag the tool to the desired location and release to measure.

You can export the angle you measure as a PDF and print it as a protractor for your drafting, engineering, or design needs.

IMAGES

  1. 20 FUN Classroom Angles Activities and Teaching Resources

    teaching angles online

  2. Types of Angles Poster A3 Wall Display

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  3. Teach child how to read: Free Printable Angles Math Worksheets

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  4. The Angles Pack

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  5. Angles

    teaching angles online

  6. Introducing angles

    teaching angles online

VIDEO

  1. Types of Angles

  2. From different angles 🦆

  3. Types of angles

  4. Lesson plan |Types of angles

COMMENTS

  1. Online protractor & angle maker

    The online protractor tool can be used to practice measuring angles. It can be used at a variety of different grade levels. At its most basic for teaching about types of angles, acute, obtuse or reflex. For more advanced use to create angle problems in which the missing letter angle values have to be found.

  2. Interactive Protractor Practice App

    An interactive protractor app to practice measuring randomly generated angles. Upload custom background image or download as a PDF worksheet.

  3. 5 Quick Activities for Teaching Angles

    5 Quick Activities for Teaching Angles By Mary Montero There are quite a few angle standards that students need to master during our larger geometry unit, so here are five of my favorite quick and simple ideas for teaching angles. Teaching Angles Anchor Chart We tackle all big topics with anchor charts, and this one is certainly packed!

  4. Measuring Angles

    Google Classroom Rotate the protractor into position and report your measurement to the nearest whole number! Measuring Angles - Learning Connections Essential Skills Using a Protractor - measure angles Estimation - report angles to the nearest whole number Common Core Connection for 4th Grade

  5. Angles: online games, activities, and lessons

    Key to Geometry Workbooks Here is a non-intimidating way to prepare students for formal geometry. Key to Geometry workbooks introduce students to a wide range of geometric discoveries as they do step-by-step constructions. Using only a pencil, compass, and straightedge, students begin by drawing lines, bisecting angles, and reproducing segments.

  6. Interactive angles acute, obtuse, measure with protractor using our

    90 Angle type (click to reveal) ? Interactively teach student various type of angles and use of protractor. This tools enables manipulation and investigation of different kinds of angles. It can be used at a variety of various grade levels. At its most fundamental when it comes to teaching about types of angles, acute, obtuse or reflex.

  7. Free virtual manipulatives for schools ideal for Interactive ...

    Visnos demonstrations page - free activities to explore mathematical concepts using virtual manipulatives. Online math activities using fractions, decimals, percentages, multiplication tables, division, telling the time, angles, polygons, factors and multiples.

  8. Angle » Toy Theater

    Teachers can use the interactive online angle tool for individual or whole class work, by projecting it on a smartboard. Here are a few ways to use the tool: Ask students to name adjacent angles by saying the colors of the angles. Ask students to name opposite angles by saying the colors of the angles.

  9. Protractor » Toy Theater

    This interactive online protractor makes it easy for students to learn how to measure angles. Toggle the degree function off or on by clicking the button in the top right hand corner. To view only an angle tool, toggle the protractor off by clicking the button on the upper left hand side. Change the angle by clicking and dragging the dotted ...

  10. Angles

    Geometry (all content) 17 units · 180 skills. Unit 1 Lines. Unit 2 Angles. Unit 3 Shapes. Unit 4 Triangles. Unit 5 Quadrilaterals. Unit 6 Coordinate plane. Unit 7 Area and perimeter. Unit 8 Volume and surface area.

  11. Using a Protractor

    Have a Go Yourself! Try to measure the angles A, B and C inside the triangle. Drag the protractor and rotate it using arrow keys. Be careful which angle you read from the protractor. Hint: if you get them all correct, they will add up to 180°. Mathopolis: Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 Q10. Using a Ruler and Drafting Triangle Using a Ruler and ...

  12. Teaching Angles: 5 Great Activities for your Classroom

    Teaching angles can be challenging with students seeming to grasp the idea one day and then lose it the next day. Below are a few activities I use to keep students' understanding of angles topped up. Door Angles Using strong white tape suitable for the floor, show the angles to which the door may be opened like in the picture.

  13. Interactive Triangles

    Interactive Triangles. Read about Triangles, and then play with them here. They rotate, too! So you can become familiar with them from all angles. Note: the three angles of a triangle add to 180°. Interactive Quadrilaterals Interactive Polygons Trigonometry Index Geometry Index.

  14. Teaching Angles, Angles, Angles!

    Geometry & Measurement | Anchor Charts | Math | Math Anchor Charts | Task Cards Teaching Angles, Angles, Angles! By Mary Montero We finished up angles the other day, and I thought I would share the teaching angles anchor chart we used and a couple of activities we did.

  15. 6 Manipulatives For Teaching Angles And Its Related Concepts

    Some popular digital and online manipulatives for teaching angles include angle finders, angle measures, and angle games. Way to use manipulatives to teach angles When using manipulatives to teach angles, it is important to provide students with opportunities to explore and experiment.

  16. Geometry

    Geometry Interactive, free online geometry tool from GeoGebra: create triangles, circles, angles, transformations and much more!

  17. Online Protractor Tool |Oryxlearning

    This online protractor tool is built to practice measuring and estimating angles. Use the slider to measure the angle and use check box to hide and show protractor. Hide Protractor Keep your students engaged with hundreds of interactive skills on Oryx Learning Note Pad Tools Examples

  18. Teaching Lines and Angles

    Updated: March 3, 2023 Geometry is one of my favorite things to teach in elementary. I always begin by teaching the kids how "geo" means earth and "metry" means to measure, so we are literally learning how to measure the earth! In this post I will be focusing on teaching lines and angles.

  19. Shapes: Angles

    Downloadable Worksheets Drawing angles An activity in finding angles in pictures. Sorting angles An activity around finding pictures with right angles in. Recognising right angles in the...

  20. 19 Math Activities to Practice Identifying & Measuring Angles

    15. Angles Animation. Scratch is an awesome resource for teaching kids basic coding skills in their free programming language. Your kids can use this online platform to create animation videos that demonstrate what they know about angles. Learn More: Mr. Hill's Musings. 16. Measuring Angles - Digital/Print Activity

  21. angles

    An angle activity with an online protractor. This is a flexible manipulative for teaching about angles which is excellent on an interactive whiteboard. There is a video tutorial explaining its use. 10-16 year olds Teachers, Pupils Alien Attack Use your knowledge of angles in this game where you defend the Earth from aliens.

  22. Online Protractor

    Angles and Degrees. Angles are measured in degrees, the symbol for degrees is a little circle ° The full circle is 360° (360 degrees) A half circle or a straight angle is 180°(180 degrees) A quarter circle or a right angle is 90°(90 degrees) How to measure an angle with a protractor. Place the midpoint of the protractor on the vertex of the ...

  23. Online Protractor

    Measuring angles with the online protractor. If you need to measure an angle, find the degrees of the angle, or compare two angles, the Online Protractor app is for you. It's free and works on any device. You can also create a PDF worksheet with your custom background image. To use the online protractor, click and drag the protractor to ...

  24. 8 Angles Games & Activities to Make Maths Class More Fun

    8 Angles Games & Activities to Make Maths Class More Fun Written by Holly (Teach Starter) Updated 6 months ago | 4 min read The primary school maths curriculum is full of standards built around the different angles. So how do you make this fundamental geometric concept fun for kids? Angle games and activities to the rescue!

  25. Jessica Curtis

    406 likes, 16 comments - jcurt_bodywork on February 22, 2024: "It's been a minute 凉 This is the longest I've gone without posting since I starte..."