1.3 Unit Overview

Apply the properties of operations to add and subtract within `20`.

By Amplify Classroom

Grades: 1st Grade

Subject: Math

Learning goals: Unit at a Glance Sub-Unit 1: Addition and Subtraction Within 10 (Lessons 1–4) • Develop fluency with addition and subtraction within `10`. Sub-Unit 2: Exploring Teen Numbers (Lessons 5–9) • Understand teen numbers are composed of a ten and a number of ones. • Represent and solve Add To, Start Unknown story problems. Sub-Unit 3: Addition Within 20 (Lessons 10–15) • Find sums within `20`. • Represent and solve story problems involving addition within `20`. Sub-Unit 4: Subtraction Within 20 (Lessons 16–20) • Find differences within `20`. • Represent and solve story problems involving subtraction within `20`.