# Lesson 2

Formemos y separemos diseños con fichas geométricas

### Lesson Purpose

The purpose of this lesson is for students to compose and decompose numbers up to 9 in more than 1 way.

### Lesson Narrative

In a previous unit, students made designs with pattern blocks and counted how many of each pattern block they used. In this lesson, students make and share a design with the same total number of pattern blocks but different numbers of individual pattern blocks.

• Representation
• MLR8

Activity 2: El diseño con fichas geométricas de Han

### Learning Goals

Teacher Facing

• Compose and decompose numbers up to 9.

### Student Facing

• Formemos y separemos diseños hechos con fichas geométricas.

### Required Materials

Materials to Gather

### Required Preparation

Activity 3:

• Gather materials from:
• Check It Off, Stage 1
• Find the Value of Expressions, Stage 1
• Bingo, Stages 1–3
• Shake and Spill, Stages 1–3

### Lesson Timeline

 Warm-up 10 min Activity 1 10 min Activity 2 10 min Activity 3 20 min Lesson Synthesis 10 min Cool-down 0 min

### Teacher Reflection Questions

Identify who has been sharing their ideas in class lately. Make a note of students whose ideas have not been shared and look for an opportunity for them to share their thinking in tomorrow’s lesson.