Measuring More Wingspans

Students use tens rods to measure lengths up to `120` base-ten units long. Note: • Activity 1 was updated in the Student Edition PDF and the Student Edition (Answers) PDF on 1/12/2026. • Activities 1 and 2 were updated in the Teacher Edition PDF and in the Teacher Presentation Screens on 1/12/2026.

By Amplify Classroom

1st Grade

Math

Today’s Goals • Measure length and determine the number of length units up to `120`. • Write numbers up to `120`. • Language Goal: Describe how to use counting or place value understanding to determine a total number of length units. (Speaking and Listening) Materials Unit Story, Side by Side; Manipulative Kit: base-ten units, tens rods; Classroom materials: masking tape