Lesson 14

Center Day 3

Lesson Purpose

The purpose of this lesson is for students to practice working with data and adding and subtracting within 10.

Lesson Narrative

Students learn a new center called Sort and Display. In this center, students sort 10–20 objects into two or three categories and then show how they sorted. They show their representation to a partner and ask questions that can be answered about their collection of objects. Students then choose from other center activities introduced in a previous section. This lesson provides the opportunity to formatively assess how students add and subtract within 10.

Learning Goals

Teacher Facing

• Build toward fluency by adding and subtracting within 10 in a way that makes sense to them.
• Sort objects into categories and represent the sort.

Student Facing

• Let’s work with data and practice adding and subtracting.

Required Materials

Materials to Gather

Materials to Copy

• Sort and Display Stage 1 Recording Sheet

Required Preparation

Activity 1:

• Make collections of 10–20 objects with up to three attributes by which to sort for each group.

Activity 2:

• Gather materials from previous centers:
• What’s Behind My Back, Stage 2
• Number Race, Stage 3
• Check it Off, Stages 1 and 2
• Five in a Row: Addition and Subtraction, Stages 1 and 2
• Find the Pair, Stage 2

Lesson Timeline

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

Teacher Reflection Questions

How effective were your questions in supporting students’ thinking today? What did students say or do that showed they were effective?