# Lesson 3

Suma a tu manera

### Lesson Purpose

The purpose of this lesson is for students to use strategies to add within 1,000.

### Lesson Narrative

In this lesson, students review a variety of strategies used to add within 1,000 with an emphasis on adding hundreds and hundreds, tens and tens, and ones and ones. Students should have access to base-ten blocks.

• Engagement
• MLR6

### Learning Goals

Teacher Facing

• Add within 1,000 in a way that makes sense to them.

### Student Facing

• Sumemos números hasta 1,000.

### Required Materials

Materials to Gather

Building On

### Lesson Timeline

 Warm-up 10 min Activity 1 25 min Activity 2 10 min Lesson Synthesis 10 min Cool-down 5 min

### Teacher Reflection Questions

What strategies are students most comfortable using to add within 1,000? How will you leverage that student understanding in upcoming lessons on addition algorithms?

### 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)
• Rectangle Rumble (3–5), Stage 2: Factors 1–5 (Supporting)