## 1.OA.C.5

## Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).

26 Lesson(s)

#### Get out your toolboxes and heavy machinery because today your are going to be Building Towers! Using vocabulary words like least,greatest, and "in order," the students will build cube towers of designated heights and then be asked to put them in order

Big Idea:

#### Movin’ on up! Counting on is a strategy that can help foster mental math skills.

#### Students play a mystery game to practice a counting on strategy. This is a great lesson to reach different kinds of learners!

#### So many things to do and so little time to do them in. Students will have the opportunity to challenge their addition and subtraction skills through a variety of activity choices.

Big Idea:

#### Smack down! In this lesson students will learn how to count back to subtract.

#### Blending is not just for ELA teachers! Today students will learn to "blend" (combine) two sets of dots and then compare the number to another using greater than by playing versions of previous learned activities.

#### A plethora of addition activities is the underlying theme in this dramatic lesson in which students combine, count on, and record their thinking. This is the Addition Rendition.

#### You down with DOT (Yeah you know me) [x3] Who's down with DOT (Every last homie) You down with DOT (Yeah you know me) [x3] Who's down with DOT (All the homies) The student are engaged with a dot addition activity that is definitely not Naughty By Nature!

#### Addition and subtraction facts are related, and my First Graders need more practice in using properties of operations to make decisions about equations. This lesson has them decide which operation is being completed to make the equation true.

#### Why is 2 greater than 3? Why is 12 greater than 8? The students will play two games that will ask the students to figure out which of two cards has more objects.

Big Idea: