Unit 6, Lesson 9
Write Numbers to 120
Grade 1
Preparation
Lesson Purpose
The purpose of this lesson is to count, read, and write numbers up to 120 in a measurement context.
Lesson Narrative
In previous lessons, students learned how to count up to 110 objects and connected written numbers to quantities.
In this lesson, students measure a length between 95 and 120 length units long and represent their count using numbers. Then students create a poster to show a drawing of their count, without including the written number. When students participate in a Gallery Walk to view each poster, they record the numbers represented.
- Representation
- MLR2
- Explain (orally) strategies for organizing and counting length units when measuring a length up to 120 length units.
- Represent a base-ten diagram with a base-ten numeral up to 120.
- Let’s count, write, and read numbers up to 120.
Required Materials
Activity 2
Required Preparation
Activity 1
- Put strips of tape on the floor, 2–3 of each length. Label with the animal name. There should be one length of tape for each group of 3.
- Beaver: 95 centimeters
- Red Fox: 105 centimeters
- Anteater: 120 centimeters
- Dog: 110 centimeters
- Raccoon: 100 centimeters
- Snake: 115 centimeters
- Make bags or buckets of about 125 centimeter cubes per group of 3.
Suggested Centers
NoneTeacher Reflection Questions
What connections did students make between towers of 10 and singles or base-ten diagrams and the written numbers up to 120? What questions did you ask to help make the connections more visible?
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