1. Suggested use: Explain challenge to children and show slide 2 which illustrates ‘1 sticker full sheets’. Children to work in pairs using mini- whiteboards to plan their solutions before sharing with class. Before testing a solution using the slide bottom hyperlinks - How was this answer reached? What is the link between stickers on a sheet and the total stickers on Winston or Wendy’s sheets? Also – What is the relationship between the number of stickers on a sheet and the difference between W & W’s totals?

2. 3 + 4 = 7 2 + 12 = 14 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 02345678910

3. 0 + 4 = 4 0 + 12 = 12 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 1012345678910

4. 6 + 4 = 10 4 + 12 = 16 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 01345678910

5. 9 + 4 = 13 6 + 12 = 18 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 01245678910

6. 12 + 4 = 16 8 + 12 = 20 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 01235678910

7. 15 + 4 = 19 10 + 12 = 22 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 01234678910

8. 18 + 4 = 22 12 + 12 = 24 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 01234578910

9. 21 + 4 = 25 14 + 12 = 26 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 01234568910

10. 24 + 4 = 28 16 + 12 = 28 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 01234567910

11. 27 + 4 = 31 18 + 12 = 30 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 01234567810

12. 30 + 4 = 34 20 + 12 = 32 Stickers on a sheet: 0 1 2 3 4 5 6 7 8 9 10 0123456789