Teacher GuideWeek 4Addition Facts to 20 — Teacher Guide
Monday: Number Bonds
1Warm-up: Make 10
1. 7+3, 4+6, 9+1, 2+8
2Number Bonds of 10
1. 6 and 4, 3 and 7, 8 and 2, 5 and 5
3Number Bonds to 20
1. 14: 9 and 5; 13: 8 and 5; 15: 7 and 8; 12: 6 and 6
4Number Talk
1. 9+7 is bigger (adding more to the same 9)
2. 9+5 is bigger (bigger first addend, same 5)
5Challenge Two Ways
1. 8+7=15, 9+6=15 — accept any two valid strategies (make 10, near doubles, counting on)

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Tuesday: Making 10 Strategy
1Warm-up: 10 Plus
1. 13, 16, 18, 15
2Make a 10
1. 9+4: 9+1=10, 10+3=13 | 8+6: 8+2=10, 10+4=14 | 9+7: 9+1=10, 10+6=16 | 8+5: 8+2=10, 10+3=13
3Estimate First
1. 7+6: more (13), 4+3: less (7), 8+9: more (17), 5+4: less (9)
4Missing Numbers
1. 9+6=15, 6+7=13, 8+9=17, 8+6=14
5Step-by-Step Make-10
1. 7+8: 7+3=10, 10+5=15, answer 15 | 9+6: 9+1=10, 10+5=15, answer 15

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Wednesday: Doubles & Near Doubles
1Warm-up: Doubles
1. 12, 14, 16, 18
2Near Doubles
1. 6+7=13 (12+1), 7+8=15 (14+1), 8+9=17 (16+1), 5+6=11 (10+1)
3Word Problems
1. 15 shells (8+7), 14 birds (9+5)
4Find the Error
1. 9+6=14 is WRONG — should be 15 (9+1=10, 10+5=15)
2. 7+7=14 is CORRECT
5Create Own
1. Accept any fact with sum 11-20 solved two valid ways

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Thursday: Word Problems with Facts to 20
1Warm-up
1. 17, 11, 11, 16
2Word Problems
1. 16 cars (7+9)
2. 7 beads (8+7=15, so 15−8=7)
3. 8 frogs (6+8=14, so 14−6=8)
3Two-Step
1. Step 1: 8+6=14, Step 2: 14−5=9 apples
4Number Talk
1. Same — 8+7=7+8 (order doesn't change the sum; both 15)
2. Same — move 1 from 5 to 9: 9+5=10+4 (both 14)
5Create Own
1. Accept student-created addition problems with sum ≤ 20

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Friday: Review & Self-Check
1Warm-up
1. 13, 16, 13, 17
2Estimate First
1. 9+7: more (16), 6+6: less (12), 8+9: more (17), 7+5: less (12)
3Fluency Review
1. 15, 12, 14, 14, 14, 18
4Word Problems
1. 17 books (9+8)
2. 8 points (6+8=14, so 14−6=8)
5Number Bonds Review
1. 16: 9 and 7; 14: 8 and 6; 13: 7 and 6
6Self-Check
1. Accept student self-assessment and reflection