Understanding Addition and Subtraction

• Overview

• K.4 Unit Overview
• Casey’s Town

• Sub-Unit 1: Counting to Add and Subtract

  Understand addition as putting together and subtraction as taking from.

• Investigate: Casey’s Town
• How Many Objects?
• How Many Objects in Pictures?
• How Will You Count?
• What Does It Mean to Add?
• What Does It Mean to Subtract?
• The Bus Depot
• K.4 Sub-Unit 1 Quiz
• K.4 Sub-Unit 1 Checklist

• Sub-Unit 2: Representing and Solving Story Problems

  Represent and solve Add To, Result Unknown and Take From, Result Unknown story problems within `10`.

• Math Stories
• A Trip to the Grocery Store
• More Grocery Store Stories
• The Mail Carrier
• One Story, Two Drawings
• Trash Day
• Our Story Problems
• K.4 Sub-Unit 2 Quiz
• K.4 Sub-Unit 2 Checklist

• Sub-Unit 3: Addition and Subtraction Expressions

  Determine the values of addition and subtraction expressions within `10`. Relate addition and subtraction expressions to story problems.

• Exploring Expressions
• Expressions and Story Problems
• Expressions and Drawings
• What Is the Value?
• Casey Cleans the Park
• Show and Tell
• K.4 Sub-Unit 3 Checklist

• End-Unit

• K.4 End-of-Unit Assessment

• Resources

• Differentiation and Personalized Learning