**OPERATIONS AND ALGEBRAIC THINKING**

**Understand addition as putting together and adding to, and understand subtraction as taking apart and taking from**

**K.OA.A.1** Represent addition and subtraction with objects, fingers, mental images, drawings, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.

**Sample Activities:**

**Show One Less**

**Towers of Five**

**Make 5 on the Five Frame (v. 1)**

**Also included in K Math Centers:**

**Addition Plate**

**Bears in the Cave**

**Make 5 on the Five Frame (v. 2)**

**Ten Frame Addition**

**K.OA.A.2 **Solve addition and subtraction word problems, and add and subtract within 10, e.g. by using objects or drawings to represent the problem.

**Sample Activities:**

Word Problems (within 10)

Add To: Result Unknown

Both Addends Unknown

**Also included in K Math Centers:**

**Take From: Result Unknown **

Put Together/Take Apart: Total Unknown

**K.OA.A.3** Decompose numbers less than or equal to 10 into pairs in more than one way, e.g. by using objects or drawings, and record each decomposition by a drawing or equation (e.g. 5= 2 + 3 and 5 = 4+1).

**Sample Activities:**

Addition Bag

Shake 5 and Spill

**Hide the Cubes**

**Domino Addition**

**Also included in K Math Centers:**

**Part Whole Mat**

**Five Squares**

**5 Little Ducks**

**5 Gingerbread Men**

**10 Oranges**

**Dot Card Addition**

Domino Addition

**K.OA.A.4 **For any number from 1 to 9, find the number that makes 10 when added to the given number, e.g., by using objects or drawings, and record the answer with a drawing or equation.

**Sample Activities:**

Towers of Ten

Make 10 on the Ten Frame (v. 1)

**Math Read Aloud Task Cards:**

Mouse Count

Ten Flashing Fireflies

**Also included in K Math Centers:**

**Make Ten**

**Make 10 on the Ten Frame (v. 2)**

**Making Apple Ten Packs**

**Sums of Ten**

**K.OA.A.5** Fluently add and subtract within five.

**Sample Activities:**

**Fast Five**

**Minus One**

**Also included in K Math Centers:**

**Make Five**

**Sums of Five**

**Plus One**

**N****UMBER AND OPERATIONS IN BASE TEN**

**Work with numbers 11-19 to gain foundations for place value**

**K.NBT.A.1** Compose and decompose numbers from 11 to 19 into ten ones and some further ones, e.g., by using objects or drawings, and record each composition or decomposition by a drawing or equation (e.g. 18 = 10 + 8); understand that these numbers are composed of ten ones and one, two, three, four, five, six, seven, eight, or nine ones.

**Sample Activities:**

**Teen Counting Cup**

**Ten Ones and More Ones (ver. 1)**

**Teen Match**

**Teen Puzzles**

**Also included in K Math Centers:**

**Ten Frame Teens**

**Ten Ones and More Ones (v. 2)**

**My Teens on the Ten Frame Book **

**Guess My Teen Number**

**Decomposing Teen Numbers**

**Teens on the Rekenrek**