1. Some sketches by subject: D&T, science, maths Adrian Oldknow a_oldknow@compuserve.com 9 th December 2004

2. D&T ?

4. Chop off a corner?

5. Need a plane!

6. Only a little bit left

7. What about this cut?

8. What’s left?

9. The unkindest cut?

10. Going round the bend Overall Length (mm)4317 Overall Width (mm)1742 Overall Height (mm)1684 Wheelbase (mm)2694 Front track (mm)1470 Rear track (mm)1487 Turning circle (Corner- to-corner) (mm) 10500 Turning circle (Wall- to-wall) (mm) 11200

11. Are the front wheels parallel?

12. Trapezium does the trick

13. Ackerman’s answer

14. But will it scrub the tyres?

15. The Atomium – what shape?

16. Which compound, what formula?

17. Go on, play with me!

18. Maths KS3 Ma3 - symmetry

19. Is this a plane of symmetry?

20. Here’s one diagonal

21. Is the other diagonal equal?

22. How many diagonals like this?

23. And like this?

24. Did you get all these?

25. How many planes like this?

26. And like this?

27. Here are 2 joining green edges

28. And the third: the edge bisector

29. So how many planes of symmetry does a cube have?

30. Dots at the centres of each face

31. What shape do they make?

32. Looks familiar?

33. Well, that’s another story!

34. And a recent discovery!