• Module 1

Sums and Differences to 10

Key Common Core Standards:

* Represent and solve problems involving addition and subtraction

* Use addition and subtraction within 10 to solve word problems

* Understand and apply properties of operations and the relationship between addition and subtraction

* Apply properties of operations as strategies to add and subtract
* Understand subtraction as an unknown-addend problem

* Add and Subtract within 10 (eventually within 20)

* Relate counting to addition and subtraction

* Work with addition and subtraction equations

* Understand the meaning of the equal sign
* Determine the unknown whole number in an addition or subtraction equation relating three whole numbers

Key Vocabulary:

Count On - students count up from one addend to the total
Example: for 5 + 4 they would start with 5, then count 6 . . 7 . . 8 . . 9 to get the total of 9

Expression -
Example:  2 + 1 or 5 + 5 (expressions do not have an equal sign, thus are not equations)

Doubles
Example: 3 + 3 or 4 + 4

Doubles Plus 1
Example: 3 + 4 or 4 + 5

Part
Example: "What is the unknown part? 3 + ___ = 8 "

Equation and Number Sentence - these words are used interchangeably throughout the module

Number Bond - a graphic showing part / part / whole