In this unit, Kindergarteners explore addition and subtraction. They begin to harness their practiced counting abilities, knowledge of the value of numbers, and work with embedded numbers to reason about and solve addition and subtraction expressions and equations. Decomposition and composition are taught simultaneously using the number bond model so that students begin to understand the relationship between parts and wholes before moving into formal work with addition and subtraction in the rest of the module.

I built my videos using Screencast-o-Matic. I then embedded in questions using Edpuzzle.

Documents that guide students through the unit:

Lesson 1, Parts and Whole

Lesson 2, Compose with Fingers

Lesson 3, Number Bonds with Picture

Lesson 4, Number Bonds with Fingers

Lesson 5, Finger Number Bonds and Cubes

Lesson 6, Number Bonds and Numbers

Lesson 7, Word Problem Number Bonds

Lesson 8, Decompose Number Bonds with Pictures

Lesson 9, Decompose Number Bonds with Numbers

Lesson 10, Decompose Numbers Bonds with Pictures 2

Lesson 11, Decompose Number Bonds with Numbers, 2

Lesson 12, Number Bonds and Tens Frames

Lesson 13, Tens Frames and Number Bonds

Lesson 14, Number Bond and Addition Sentences

Lesson 15, Addition Sentences and Number Bonds

Lesson 16, Addition Sentences and Tens Frames

Lesson 17, Tens Frames and Addition Sentences

Lesson 18, Addition Word Problems

Lesson 19, Decomposition Addition Word Problems

Lesson 20, Composition and Decomposition

Lesson 21, Vertical Addition

Lesson 22, Missing Addend in Number Bonds

Lesson 23, Missing Addend in Addition Sentences

Lesson 24, Number Line Addition

Lesson 25, Subtraction

Lesson 26, Subtraction Sentences

Lesson 27, Subtract with Fingers

Lesson 28, Tens Frames and Subtraction

Lesson 29, Number Bonds and Subtraction

Lesson 30, Subtraction Word Problems

Lesson 31, Subtract What You Have

Lesson 32, Number Line Subtraction