1. Meet DON

2. Meet DON
Direction

3. Meet DON
Direction of

4. Meet DON
Direction of number

5. Meet DON
DON looks like this when he’s stood still

6. Positive -1 +1
DON looks like this when facing the positive direction

7. Negative -1 +1
DON looks like this when facing the negative direction

8. DON can show us how to use directed numbers

9. First a calculation for DON to show us

10. =
First a calculation for DON to show us

11. =
Easy
First a calculation for DON to show us

12. =
This number tells me where to stand
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

13. +7 7 + -3 = This number tells me where to stand -10 -8 -6 -4 -2 +2 +4+2 +4 +6 +8
+10

14. +7 7 + -3 = The first sign tells me which way to face -10 -8 -6 -4 -2+2 +4 +6 +8
+10

15. +7 7 + -3 = The first sign tells me which way to face
I need to face the positive direction +7
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

16. +7 7 + -3 = The first sign tells me which way to face
I need to face the positive direction +7
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

17. =
The second sign tells me whether to go forwards or backwards +7
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

18. +7 7 + -3 = The second sign tells me whether to go forward or backward
The sign is minus so +7
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

19. +7 7 + -3 = The second sign tells me whether to go forward or backward
The sign is minus so
I need to go backwards. +7
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

20. +7 7 + -3 = I need to go backwards by 3 -10 -8 -6 -4 -2 +2 +4 +6 +8+2 +4 +6 +8
+10

21. +7 7 + -3 = I need to go backwards by 3 Ok lets do it… -10 -8 -6 -4 -2+2 +4 +6 +8
+10

22. =
Back by 1 +6
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

23. =
Back by 2 +5
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

24. =
Back by 3 +4
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

25. =
We end up at +4 +4
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

26. =
We end up at +4 = +4
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10

27. =
We end up at +4
= 4 +4
-10 -8 -6 -4 -2 +2 +4 +6 +8
+10