Objectives Day 1 Recognise lines of symmetry, complete symmetrical drawings. Day 2

1. Shape Recognise line symmetry Name/sort 2-D shapes Objectives Day 1 Recognise lines of symmetry, complete symmetrical drawings. Day 2 Describe, name and sort 2-D shapes. Day 3 Describe, name and sort 2-D shapes using a Venn diagram. Year 3

2. Shape Recognise line symmetry Name/sort 2-D shapes Starters Day 1 Find lines of symmetry (pre-requisite skills) Day 2 2-D shapes (pre-requisite skills) Day 3 Telling the time (simmering skills) Year 3

3. Shape Recognise line symmetry Name/sort 2-D shapes Starter Find lines of symmetry Year 3

4. Shape Recognise line symmetry Name/sort 2-D shapes Starter 2-D shapes Year 3

5. Shape Recognise line symmetry Name/sort 2-D shapes Starter Telling the time Year 3

6. Shape Recognise line symmetry Name/sort 2-D shapes Objectives Day 1 Recognise lines of symmetry; complete symmetrical drawings. Year 3

7. Day 1: Recognise lines of symmetry; complete symmetrical drawings. Start by watching this VIDEO CLIP about symmetry. Year 3

8. Day 1: Recognise lines of symmetry, complete symmetrical drawings. Talk to your partner about these challenges. Write your answers on whiteboards. Find shapes with 1 line of symmetry. Which ones have no lines of symmetry? Find the shapes with 2 or more lines of symmetry. One of the shapes has 8 lines of symmetry. Which one is it and where are the lines of symmetry? Year 3

9. Day 1: Recognise lines of symmetry, complete symmetrical drawings. Lines of symmetry on a 2-D shape divide the shape so it looks exactly the same on either side of the line. Year 3

10. Day 1: Recognise lines of symmetry, complete symmetrical drawings. Can you ‘karate chop’ a shape to show the line(s) of symmetry? Place strips of paper along the object where you would chop it. Let’s check your ideas with a mirror! Year 3

11. Day 1: Recognise lines of symmetry, complete symmetrical drawings. Do all of these shapes have a line of symmetry? Year 3

12. Year 3

13. Shape Recognise line symmetry Name/sort 2-D shapes Objectives Day 2 Describe, name and sort 2-D shapes. Year 3

14. Day 2: Describe, name and sort 2-D shapes. It has 4 sides. The sides are all the same length. It has 4 right angles. It has 4 lines of symmetry. It is a polygon because it has all straight sides. What is this shape called? Year 3

15. Day 2: Describe, name and sort 2-D shapes. These are all regular shapes. Regular shapes have sides of the same length and angles the same size. Year 3

16. Day 2: Describe, name and sort 2-D shapes. Describe your shape to your partner. Can they guess your shape? You have 30 seconds! Jot down how you would describe your shape. Choose a shape and draw around it on your whiteboard. Now swap around! Year 3

17. Day 2: Describe, name and sort 2-D shapes. What mathematical language did we use to describe the shapes…? Year 3

18. Day 2: Describe, name and sort 2-D shapes. Let’s have a go at naming each shape… These are all polygons, but are irregular shapes as the sides of each are not the same length. Year 3

19. Challenge Year 3

20. Shape Recognise line symmetry Name/sort 2-D shapes Objectives Day 3 Describe, name and sort 2-D shapes using a Venn diagram. Year 3

21. Day 3: Describe, name and sort 2-D shapes using a Venn diagram. Describe this shape to your partner. Now describe this one. And this one. Year 3

22. Day 3: Describe, name and sort 2-D shapes using a Venn diagram. 6 2 Which ones have ‘square corners’? Count the right angles in each shape. Remember that these are called right angles. 0 Year 3

23. Day 3: Describe, name and sort 2-D shapes using a Venn diagram. pentagon hexagon What are they? octagon Year 3

24. Day 3: Describe, name and sort 2-D shapes using a Venn diagram. Have a go at drawing different-looking pentagons. What should all of your pentagons have in common? Year 3

25. Day 3: Describe, name and sort 2-D shapes using a Venn diagram. Now have a go at drawing different-looking hexagons. How ‘weird’ (irregular) can you make them look?! Do any of your hexagons have a right angle? Year 3

26. Day 3: Describe, name and sort 2-D shapes using a Venn diagram. What about octagons. Can you draw a range of these? How ‘weird’ (irregular) can you make them look?! Do any of your octagons have a right angle? Year 3

27. Day 3: Describe, name and sort 2-D shapes using a Venn diagram. Chose a 2-D shape and place it on the Venn diagram. Why did you place it there? Year 3

28. Year 3

29. Year 3

30. Shape Recognise line symmetry Name/sort 2-D shapes Well Done! You’ve completed this unit. Objectives Day 1 Recognise lines of symmetry, complete symmetrical drawings. Day 2 Describe, name and sort 2-D shapes. Day 3 Describe, name and sort 2-D shapes using a Venn diagram. Year 3

31. Problem solving and reasoning questions Draw a 2-D shape with at least 1 curved side and 2 lines of symmetry. How many lines of symmetry in a regular pentagon? Can you draw a… • 4-sided shape with exactly 2 right angles? • Hexagon with every side a different length? • Regular octagon? Draw a ring around any regular polygons: Year 3

32. Problem solving and reasoning: Answers Draw a 2-D shape with at least 1 curved side and 2 lines of symmetry. Shape may be ovoid, or resemble a ‘rounded’ rectangle, e.g. How many lines of symmetry in a regular pentagon? 5. These go from each of the 5 vertices to the mid-point of the opposite side Can you draw a… • 4-sided shape with exactly 2 right angles? Yes, various possibilities, e.g • Hexagon with every side a different length? Yes, various possibilities, check. • Regular octagon? Yes, all sides and angles should be equal. Year 3

33. Problem solving and reasoning: Answers cont’d Draw a ring around any regular polygons: square heptagon pentagon hexagon equilateral triangle Year 3