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What are right, acute, obtuse and reflex angles?
What do children learn about angles in KS1?
Children start learning the language of direction in Year 1 , when they talk about quarter, half and full turns. Teachers encourage children to learn about turns by getting them to stand up and make quarter, half and full turns around the classroom. They may also give children a small figurine or doll for them to place on a picture and practise making various turns with. It is vital that children understand the concept of these turns, as it is the foundation for learning about angles.
By the end of Year 2 , they should be able to talk about these turns, and to explain which direction they are going in: clockwise or anti-clockwise. During Year 2, children will also learn to tell the time to the quarter hour, so they should be aware of the direction in which the hands on the clock move.
What do children learn about angles in KS3?
In Year 3 , children will need to recognise right angles and to know that two right angles make a half turn, three make three-quarters of turn and four a complete turn. They need to identify whether angles are greater than or smaller than a right angle.
In Year 4 , children need to know about acute and obtuse angles.
In Year 5 , children start using a protractor to measure acute, obtuse and reflex angles. Children also need to calculate angles around a point, on a straight line and within 90°.
Children in Year 6 will need to rotate shapes through 90° or 180°. They will need to use a protractor to measure and draw angles and calculate angles in a triangle or around a point as well as finding unknown angles in triangles, quadrilaterals and regular polygons.
Using a protractor
Protractors are marked from 0˚ to 180˚ from left to right, but also from right to left, which can take some getting used to! Children are shown again that two right angles make up a straight line and since 90˚ x 2 = 180˚, this is the measurement for a straight line.
When it comes to acute and obtuse angles, children may be given a set of angles to cut out, measure and then sort into two groups. They may also be given questions similar to the following:
Angles worksheets and activities
To help your child put their knowledge of shapes and angles into practice download angles worksheets and other geometry worksheets .
More like this
Teach Starter Teach Starter
20 fun classroom angles activities and teaching resources.
Teaching your students how to identify simple angles, to calculating and identifying different configurations of angles, can be a pretty boring subject!
But, it doesn’t need to be! Here are some fun, yet worthwhile, activities and teaching resources you could use in the classroom to improve your students’ understanding of angles.
There are often cute little comics that you could begin lessons with as a great discussion point…
Looking for Angles in Letters
Have students use a ruler to create the letter of their first name. Then, with the ruler, draw random lines within their letter and colour as they wish. Students then need to find as many angles as they can and measure each angle! Simple, fun and worthwhile!
Measure Angles in Pictures
We have some gorgeous angle worksheets with cute pictures that have different types of angles for your students to identify.
This could be done individually, alternatively, print onto an A3 piece of paper and provide small groups with a copy. Each student in the group could be allocated a particular angle to find, or the sheet could be passed around for each student to find one angle at a time!
Angles Bingo
Whatever you are teaching, BINGO is always a popular activity to do with your class.
Check out our Angles Bingo .
Washi Tape Fun!
Students use Washi Tape and stick bits of it all over an A4 piece of card.
They then need to find and measure all of the angles! This could be done on students desks, using a whiteboard marker!
Angles in My Name
Using our grid paper template , instruct your students to use a ruler to write their name in pencil on the grid paper, without any curved edges. Students trace over their name with a pen, then find each of the angles in their name. If their first name is short, they may wish to use their surname.
As an extension activity, students could find reflex and straight angles.
I have, Who Has? Angles Game
A whole-class game to consolidate students’ understanding of complementary and supplementary angles.
Print and cut the game cards. Provide each student with a card.
The student that has the sentence ‘I am the starter’ begins the game by standing up and reading their card.
Once they have read their clue, the student that has the matching complementary or supplementary angle on their card stands up and reads what is on their card.
The game continues until the last person reads out ‘Finished’.
Make an Angles Display
Angles can be pretty tricky when you are trying to learn all the different types and terms. Having a classroom display to help your students remember the different terms and angles is a must! We have a range of posters that are perfect to display in your classroom.
Here are some of our fantastic fraction posters available to download today!
teaching resource
Angle properties factsheet.
A factsheet outlining angles and their properties.
Vertically Opposite Angles Poster
A poster outlining how to identify and the properties of vertically opposite angles.
Alternate Angles Poster
A poster outlining how to identify and the properties of alternate angles.
Corresponding Angles Poster
A poster outlining how to identify and the properties of corresponding angles.
Using a 180 Degree Protractor Poster
A poster to display when learning how to use a protractor correctly.
Geometry Word Wall Vocabulary
A geometry word wall to teach your students the associated vocabulary.
Angles at a Point Poster
A poster to display when learning about angles at a point.
Angle Clappers
Angles and all their different names can be confusing, but these Angle Clappers make angles fun.
These Angle Clappers take a bit of constructing, but they’re well worth it when they are done. Use these angle clappers to interactively show the different angles and their properties.
Door Angles
Use Washi Tape and measure out the different angles the classroom door can show! A great visual and fun activity the whole class can benefit from! A great photo from Math in the Middle .
Teaching PowerPoints
Use our fantastic Identifying Angles PowerPoint and Working with Angles PowerPoint .
Identifying Angles PowerPoint
A 22 slide editable PowerPoint template to use when identifying angles.
Working with Angles PowerPoint
A 12 slide editable PowerPoint template to use when introducing more complex angles to older students.
- Teaching Ideas
Amazing resources. Great hands-on activities for working with angles. Thank you!
Hey Jodi, thank you so much for taking the time to share your lovely feedback.
This is perfect for my class. Was looking for some fun warm up games. Thanks so much!
You're most welcome Christopher! Thanks for your kind feedback.
This is fantastic, so many ideas to use to immerse the students in Angles. Thanks once again Holly. Di Dendle.
You're most welcome Dianne! Thanks so much for your lovely feedback.
Excelente actividad, gracias. Saludos desde México.
You're most welcome Juan. Thanks for your kind words.
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Solving Primary School Mathematics
Just the singapore primary school mathematics, tag archives: angles, sarin learns shapes and solids in school part 52 (math question).
The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Angles and Shapes .
Read the posting on Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles.
Read the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.
Challenge yourself with the question before look for the given solution‼!
Upper primary school mathematics question UPQ451
The diagram shows a regular octagon ABCDEFGH. Given that GD//FE and angle BDG = x 0 , find the value of x .
…Click here to go to solution…
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Sarin learns shapes and solids in school part 51 (math question).
Upper primary school mathematics question UPQ437
The figure below is formed by folding a corner of a piece of rectangle paper. Find ∠ BCE.
Sarin learns Shapes and Solids in school part 50 (Math Question)
The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presents the Math Concept, the Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with the Math Modeling, the Math Problem Solving and the Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Lines , Angles and Shapes .
Upper primary school mathematics question UPQ429
In the figure above, QRST is a trapezium and PQR and TQU are straight lines. Find ∠ z.
Sarin learns Shapes and Solids in school part 49 (Math Question)
Upper primary school mathematics question UPQ424
In the figure, ABC is an isosceles triangle and AC = BC, Find ∠ DCE.
Sarin learns Shapes and Solids in school part 48 (Math Question)
Upper primary school mathematics question UPQ403
The figure below is not drawn to scale. Given that AB, CD and EF are straight lines, find ∠x.
Sarin learns Lines and Angles in school part 12 (Math Question)
The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presents the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can aquire the skills of dealing with Math Modeling, Math Problem Solving and Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an u pper primary school math question on Lines and Angles .
Read the posting on Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles.
Challenge yourself with the question before look out for the given solution‼!
Upper primary school mathematics question UPQ385
In the figure below, XU, WZ, YO and VO are straight lines. ∠ YOX = ∠ VOW = 90°. If ∠a + ∠ c = 90 0 . Find ∠ d.
…Click to know the solution…
Sarin learns Lines and Angles in school part 11 (Math Question)
The blog postings are about the Singapore Math. The readers can learn from the postings about Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can aquire the skills of dealing with Math Modeling, Math Problem Solving and Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an u pper primary school math question on Lines and Angles .
Upper primary school mathematics question UPQ336
In the figure below, ∠ x is 4 times the size of ∠ d. Find ∠ x.
Sarin learns Lines and Angles in school part 10 (Math Question)
Upper primary school mathematics question UPQ335
In the figure below, not drawn to scale, AB is a straight line. Find ∠ COB.
Sarin learns Shapes and Solids in school part 39 (Math Question)
The blog postings are about the Singapore Math. The readers can learn from the postings on Solving Singapore Primary School Mathematics. The blog presenting the Math Concept, Math Questions with solutions that teaches in Singapore Primary Schools. You or the kids can learn the skills to deal with Math Modeling, Math Problem Solving and Problem Sum from Lower Primary School to Upper Primary School level after reading the blog postings. This posting is an upper primary school math question on Angle and Shape .
Read the posting on Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles. Read also the posting on Sarin learns Shapes and Solids in school (Math Concept) to know about shapes.
Upper primary school mathematics question UPQ319
In the figure below, not drawn to scale, PQR is an equilateral triangle while WXYZ is a square. Find angle k.
Sarin learns Lines and Angles in school part 9 (Math Question)
Upper primary school mathematics question UPQ318
AB, CD and EF are straight lines. ∠y is twice the size of ∠x. Find ∠y. The figure is not drawn to scale.
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What do children learn about angles in KS3? In Year 3, children will need to recognise right angles and to know that two right angles make a half turn, three make three-quarters of turn and four a complete turn. They need to identify whether angles are greater than or smaller than a right angle.
This posting is an u pper primary school math question on Lines and Angles. Read the posting on Sarin learns Lines and Angles (Math concept) to understand the concept of lines and angles. Challenge yourself with the question before look out for the given solution‼! Upper primary school mathematics question UPQ385