Lesson 10

Center Day 2

Lesson Purpose

The purpose of this lesson is for students to practice measuring and adding within 100.

Lesson Narrative

Students learn a new center called Estimate and Measure, where they choose an object and a length unit to measure it with. They estimate the length of the object before measuring to find the actual length. Students then choose from previously introduced centers focusing on adding within 100.
  • Action and Expression
  • MLR8

Learning Goals

Teacher Facing

  • Add within 100.
  • Measure length by iterating same-size length units without gaps or overlaps.

Student Facing

  • Let’s measure the length of objects.

Required Materials

Materials to Gather

Materials to Copy

  • Estimate and Measure Stage 1 Recording Sheet

Required Preparation

Activity 1:

  • Gather or identify objects of various lengths that are less than 20 connecting cubes long (pencils, markers, books, glue, scissors, shoe, tape dispenser).

Activity 2:

  • Gather materials from:
    • How Close? Stages 1–3
    • Target Numbers, Stages 1–3
    • Five in a Row, Stages 1–6

CCSS Standards

Lesson Timeline

Warm-up 10 min
Activity 1 20 min
Activity 2 20 min
Lesson Synthesis 10 min

Teacher Reflection Questions

As students worked together today, where did you see evidence of the mathematical community established over the course of the school year? 

Print Formatted Materials

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Student Task Statements pdf docx
Lesson Cover Page pdf docx
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Teacher Presentation Materials pdf docx
Blackline Masters zip

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