# Lesson 1

Representemos números de distintas maneras

### Lesson Purpose

The purpose of this lesson is for students to represent numbers using base-ten blocks, base-ten diagrams, expanded form, numerals, and word form.

### Lesson Narrative

Prior to this grade, students represented numbers within 1,000 using number names, base-ten blocks and diagrams, and expanded form. They used place value to compose and decompose numbers within 1,000.

In this lesson, students revisit these familiar representations and ways of reasoning about numbers as they work to build fluency with addition and subtraction within 1,000. The base-ten diagrams and the expanded form will continue to be used to support students throughout this unit. Give students access to base-ten blocks, in case requested.

• Engagement
• MLR8

### Learning Goals

Teacher Facing

• Represent numbers to 1,000 in different ways using place value understanding.

### Student Facing

• Representemos números de distintas maneras.

### Required Materials

Materials to Gather

Materials to Copy

• Numbers in Different Forms Round Table, Spanish
• Card Sort: Numbers in Their Different Forms, Spanish

### Required Preparation

Activity 1:

• Create a set of cards from the blackline master for each group of 2.

Building On

Building Towards

### Lesson Timeline

 Warm-up 10 min Activity 1 15 min Activity 2 20 min Lesson Synthesis 10 min Cool-down 5 min

### Teacher Reflection Questions

Whose ideas were shared in class today? How can you leverage each of your students’ ideas to support them in being seen and heard in tomorrow’s math class?

### Suggested Centers

• Target Numbers (1–5), Stage 6: Add Hundreds, Tens, or Ones (Addressing)
• Five in a Row: Addition and Subtraction (1–2), Stage 8: Add within 1,000 with Composing (Addressing)