Phase 1 Core — Mixed Add/Sub within 20

Hamilton Zoo & conservation contexts

1. 7 + 5 = ____
2. 12 − 4 = ____
3. Make 10: 8 + ____ = 10
4. 9 + 6 = ____ (show make-10 hops)
5. 14 − 8 = ____
6. Penguins in pairs: 6 + 7 = ____ (use near double)
7. Counting-on: start 9, +3 = ____
8. Wētā hideouts: 5 + 5 + 2 = ____
9. 12 = ____ + ____ (two ways)
10. Keeper story: 8 birds, 5 more arrive. Total? Equation: ____
11. Planting: 15 seedlings, 6 planted. Left? ____
12. Quick image: 4 + 4 = ____ ; 4 + 5 = ____

Phase 1 Core — Strategy Focus

Show strategy: counting-on, make-10, double/near double, part-part-whole.

1. 7 + 8 = ____ (name strategy)
2. 10 − 6 = ____
3. Make 10: 6 + ____ = 10; then 6 + 8 = ____
4. Near double: 5 + 6 = ____
5. Part-part-whole: 14 = ____ + ____ (not 7+7)
6. Counting back: 17 − 3 = ____
7. Story: 9 lemurs, 4 go to sleep. Left? ____
8. Skip count by 2s from 4 (five numbers): 4, __, __, __, __, __
9. Double then adjust: 6 + 7 = ____
10. Wētā survey: 10 − 2 = ____ ; 10 − 9 = ____