Measuring AnglesUse the onscreen protractor to measure the size of the given angles as accurately as you can. 
This is level 1; Estimate the size of the acute angle using the correct protractor scale.
InstructionsTry your best to answer the questions above. Type your answers into the boxes provided leaving no spaces. As you work through the exercise regularly click the "check" button. If you have any wrong answers, do your best to do corrections but if there is anything you don't understand, please ask your teacher for help. When you have got all of the questions correct you may want to print out this page and paste it into your exercise book. If you keep your work in an ePortfolio you could take a screen shot of your answers and paste that into your Maths file. 



Transum.orgThis web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available. Please contact me if you have any suggestions or questions. 
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If you found this activity useful don't forget to record it in your scheme of work or learning management system. The short URL, ready to be copied and pasted, is as follows: 
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Level 1  Estimate the size of the acute angle using the correct protractor scale
Level 2  Estimate the size of the obtuse angle using the correct protractor scale
Level 3  Read accurately the size of the angle given by three letters
Level 4  Position the protractor to measure the size of acute angles
Level 5  Position the protractor to measure the size of obtuse angles
Level 6  Position the protractor to measure the size of reflex angles
Level 7  Position the protractor to measure the size of angles less than 360^{o}
More on this topic including lesson Starters, visual aids and investigations.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
See the National Curriculum page for links to related online activities and resources.
The video above is from MathsWatch
Don't wait until you have finished the exercise before you click on the 'Check' button. Click it often as you work through the questions to see if you are answering them correctly. You can doubleclick the 'Check' button to make it float at the bottom of your screen.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
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Craig, Twitter
Saturday, September 14, 2019
Mary Bluhm Holsten, Twitter
Friday, February 14, 2020
Lucy, Kenya
Tuesday, March 31, 2020
"I am impressed that there is such an exercise online. However, I have a quick question. How do I rotate the protractor on an iPad. On MacBook it works perfectly.
[Transum: Tick the checkbox in the red sentence above the questions. That works on an iPad.]"
Aaron Grossman, Twitter
Tuesday, February 23, 2021
Gabriel Dannemiller, Ohio
Friday, March 5, 2021
"This is a great resource. I used it last year during distance learning for my 4th students to practice measuring angles. It's very accurate, similar to using an actual protractor you hold in your hand, fairly easy to use and free. Thank you for providing this for free."