1. C SYMMETRY Toni Underhill

2. Math Fourth Grade The purpose of this instructional Powerpoint is to help in the understanding of the concept symmetry. Given the powerpoint, the students will identify lines of symmetry in order to show the ability to recognize a line of symmetry for a two dimensional figure. CCSS.Math.Content.4.G.A.3 Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts. Identify line-symmetric figures and draw lines of symmetry. CCSS.Math.Content.4.G.A.3

3. C WHAT IS SYMMETRY? If something has symmetry it is the same on both sides. Symmetry = Reflection / Mirror

4. If you draw a line down the middle of a butterfly, it will have symmetry.

5. Some More Examples: Many shapes have symmetry Many animals have symmetry Even some foods have symmetry

7. If the line of symmetry goes up or down, it is called VERTICAL symmetry

8. If the line of symmetry goes across, or side to side, it is called HORIZONTAL symmetry

9. Some objects have VERTICAL and HORIZONTAL symmetry!

10. Which of these are symmetrical??? Click on the correct picture.

11. YES! This cat has VERTICAL symmetry!

12. A.Diagonal & StraightDiagonal & Straight B.Vertical & HorizontalVertical & Horizontal C.Criss Cross & Upside DownCriss Cross & Upside Down

13. CORRECT!!

14. A.Side to SideSide to Side B.Up and DownUp and Down

15. CORRECT!!

16. A.Side to SideSide to Side B.Up and DownUp and Down

18. You learned that there are two different types of symmetry: vertical and horizontal. You learned that some objects have vertical and horizontal symmetry. You also learned to recognize a line of symmetry in objects. Can you find symmetry in the world around you?

19. INCORRECT!