Inglehurst lesson - maths perpendicular .pptx

ff

1. Golden rules: Be kind Be respectful … and most of all, be great mathematicians!

2. Lesson objective: To be able to identify perpendicular lines. To be able to identify parallel lines.

3. Warm-up Which line is a straight line? (1) (2)

4. Warm-up What is a right-angle? An angle that is exactly… (1) 180 degrees (2) 45 degrees (3) 90 degrees

5. Warm-up Which triangle has a right-angle? (1) (2)

6. Warm-up Which shape has a right-angle ? (1) (2)

7. Recap: horizontal and vertical lines

8. Recap: horizontal and vertical lines

9. Can you spot horizontal lines in the classroom? What about vertical lines?

10. Can you spot two straight lines that meet to make a right-angle in the classroom? List as many as you can on your papers!

11. Can you find two straight lines that meet to make a right-angle on this house?

12. When two straight lines meet at a right-angle, they are called perpendicular lines .

13. Are these lines perpendicular? Why? Why not? I think they are… because... I think they are not… because… TTYP

14. Can you find perpendicular lines in these pictures?

15. Which pair of lines are perpendicular? (1) (2)

16. Which pair of lines are perpendicular? (1) (2)

17. We’ve learnt about lines that meet, but what about lines that do not meet ? Can you spot any?

18. When two straight lines do not meet , they are called parallel lines .

19. Can you spot any parallel lines in the classroom? List as many as you can on your papers!

20. Are these lines parallel? Why? Why not? I think they are… because... I think they are not… because… TTYP

21. Can you find parallel lines in these pictures?

22. Which pair of lines are parallel?

23. Can you tell your partner what perpendicular lines are? Can you draw them for me? Can you tell your partner what parallel lines are? Can you draw them for me?