4A 7-2 slides: Intro to Symmetry

Slides used for 4A's introductory lesson on symmetry, 20th April 2016.

1. SYMMETRY SYMMETRY

2. WALT What a symmetric figure is How to identify a line of symmetry State what happens when you fold a symmetric object about its line of symmetry

3. These are symmetric figures

4. What you see are lines of symmetry

5. The halves along the line are mirror images of each other

6. I like to fold it, fold it Your worksheet is rectangular in shape. Fold it into two symmetric halves.

7. CAN YOU IMAGINE IT?

8. SHOW ME WHACHU GAHT

9. Which figures are symmetric? a b c d e f $

10. Ans : a, d, e a b c d e f $

11. Ma MPAH WB Pg 111: Which figures are symmetric? Ans : B, D, E, F, G, H

12. Ma MPAH WB Pg 112: Which figures are symmetric? Ans : A, C, D

13. Just to be sure 1 min: fin qn 2 & 3 in Ma MPAH TB pg 115

14. In your pairs, make a list of at least 10 examples of everyday symmetrical objects Pick 5 and draw them along with their lines of symmetry

15. Let’s hear from some of you

16. Now it’s time to…

17. The dotted lines divide these figures into equal halves, but they are not lines of symmetry. Can you explain why? The two parts do not fit exactly when folded along the dotted line.

18. Ma MPAH WB Pg 113 Ans : Yes No Yes No No Yes Yes yes

19. In which figure(s) is the dotted line a line of symmetry? a b c d e

20. Ans : b, d, e a b c d e

21. Now that we totally understand what symmetry is, we can MAKE a piece of art that is symmetric

22. Time for an activity

23. In your PAIRS Make one SYMMETRIC shape Make one NON- SYMMETRIC shape Followed by: MPAH Ma WB Pg 113-114

24. We can make a shape symmetrical