Grade 1 Mathematics Weeks 11–12: Student Textbook
Ten instructional days. Use counters, ten-frames, base-ten blocks, a ruler of equal-size units, and an analog clock where appropriate. Show how you know.
Day 51: Add within 20
Model: 8 + 7 = ___ Explain with objects, a drawing, or a number sentence.
Guided problem: 9 + 8 = ___
Explain: Tell an adult why your answer makes sense.
Day 52: Make ten
Model: 9 + 6 = ___ Explain with objects, a drawing, or a number sentence.
Guided problem: 10 + 7 = ___
Explain: Tell an adult why your answer makes sense.
Day 53: Subtract within 20
Model: 16 – 7 = ___ Explain with objects, a drawing, or a number sentence.
Guided problem: 17 – 8 = ___
Explain: Tell an adult why your answer makes sense.
Day 54: Unknown addend
Model: 7 + 5 = ___ Explain with objects, a drawing, or a number sentence.
Guided problem: 8 + 6 = ___
Explain: Tell an adult why your answer makes sense.
Day 55: Mixed facts
Model: 12 – 6 = ___ Explain with objects, a drawing, or a number sentence.
Guided problem: 13 – 7 = ___
Explain: Tell an adult why your answer makes sense.
Day 56: Tens and ones
Model: Write 34 as tens and ones. Explain with objects, a drawing, or a number sentence.
Guided problem: Write 35 as tens and ones.
Explain: Tell an adult why your answer makes sense.
Day 57: Compare two-digit numbers
Model: Compare 46 and 39 using >, <, or =. Explain with objects, a drawing, or a number sentence.
Guided problem: Compare 47 and 40 using >, <, or =.
Explain: Tell an adult why your answer makes sense.
Day 58: Ten more and ten less
Model: What is 10 more than 53? Explain with objects, a drawing, or a number sentence.
Guided problem: What is 10 more than 54?
Explain: Tell an adult why your answer makes sense.
Day 59: Add tens
Model: 30 + 40 = ___ Explain with objects, a drawing, or a number sentence.
Guided problem: 31 + 41 = ___
Explain: Tell an adult why your answer makes sense.
Day 60: Place-value review
Model: Write 67 as tens and ones. Explain with objects, a drawing, or a number sentence.
Guided problem: Write 68 as tens and ones.
Explain: Tell an adult why your answer makes sense.