Grade 1 Mathematics Weeks 25–26 Student Textbook

Grade 1 Mathematics Weeks 25–26: Student Textbook

Ten instructional days. Work with counters, tens blocks, equal-size measuring cubes, clocks, and diagrams. Explain answers aloud.

Week 25: Place-value reasoning to 120

Day 121: Explore

Lesson: Place-value reasoning to 120. Bundle groups of ten.

Worked example to discuss: Write 87 as tens and ones. Answer: 8 tens and 7 ones.

Try: Write 88 as tens and ones. Explain how you know.

Day 122: Model

Lesson: Place-value reasoning to 120. Bundle groups of ten.

Worked example to discuss: Write 88 as tens and ones. Answer: 8 tens and 8 ones.

Try: Write 89 as tens and ones. Explain how you know.

Day 123: Explain

Lesson: Place-value reasoning to 120. Bundle groups of ten.

Worked example to discuss: Write 89 as tens and ones. Answer: 8 tens and 9 ones.

Try: Write 90 as tens and ones. Explain how you know.

Day 124: Apply

Lesson: Place-value reasoning to 120. Bundle groups of ten.

Worked example to discuss: Write 90 as tens and ones. Answer: 9 tens and 0 ones.

Try: Write 87 as tens and ones. Explain how you know.

Day 125: Check

Lesson: Place-value reasoning to 120. Bundle groups of ten.

Worked example to discuss: Write 87 as tens and ones. Answer: 8 tens and 7 ones.

Try: Write 88 as tens and ones. Explain how you know.

Week 26: Compare and order numbers

Day 126: Explore

Lesson: Compare and order numbers. Compare tens first, then ones.

Worked example to discuss: Which is greater, 76 or 83? Answer: 83.

Try: Which is greater, 77 or 84? Explain how you know.

Day 127: Model

Lesson: Compare and order numbers. Compare tens first, then ones.

Worked example to discuss: Which is greater, 77 or 84? Answer: 84.

Try: Which is greater, 78 or 85? Explain how you know.

Day 128: Explain

Lesson: Compare and order numbers. Compare tens first, then ones.

Worked example to discuss: Which is greater, 78 or 85? Answer: 85.

Try: Which is greater, 79 or 83? Explain how you know.

Day 129: Apply

Lesson: Compare and order numbers. Compare tens first, then ones.

Worked example to discuss: Which is greater, 79 or 83? Answer: 83.

Try: Which is greater, 76 or 84? Explain how you know.

Day 130: Check

Lesson: Compare and order numbers. Compare tens first, then ones.

Worked example to discuss: Which is greater, 76 or 84? Answer: 84.

Try: Which is greater, 77 or 85? Explain how you know.