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- 1.OA.C.5Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
- 1.OA.C.6Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

Building Towers

1st Grade Math

Â» Unit:

Counting & Comparing

Big Idea: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

Counting on to add

1st Grade Math

Â» Unit:

Single Digit Addition and Subtraction

Big Idea:Movinâ on up! Counting on is a strategy that can help foster mental math skills.

Counting Back

1st Grade Math

Â» Unit:

Single Digit Addition and Subtraction

Big Idea:Smack down! In this lesson students will learn how to count back to subtract.

Addition and Subtraction Carnival

1st Grade Math

Â» Unit:

Working with Numbers, Operations, and Story Problems

Big Idea: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.

What is counting on?

1st Grade Math

Â» Unit:

Creating a Culture of Math

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

Combine and Compare

1st Grade Math

Â» Unit:

Blending

Big Idea: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.

The Addition Rendition

1st Grade Math

Â» Unit:

Working with Numbers, Operations, and Story Problems

Big Idea: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.

Addition With Dice Dot Patterns

1st Grade Math

Â» Unit:

Working with Numbers, Operations, and Story Problems

Big Idea: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!

Is it addition or subtraction?

1st Grade Math

Â» Unit:

Addition Strategies

Big Idea: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.

How are They Different?

1st Grade Math

Â» Unit:

Counting & Comparing

Big Idea: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.

Act it out!

1st Grade Math

Â» Unit:

Creating a Culture of Math

Big Idea:Students solve problems and begin to explore the "counting on" strategy!

"Kickin' Back" Retired Style

1st Grade Math

Â» Unit:

Counting & Comparing

Big Idea:What better way to take it easy then to play America's favorite retiree game BINGO! The students will work with the idea of adding one and subtracting one from numbers 1-10.

Quick Flash

1st Grade Math

Â» Unit:

Counting & Comparing

Big Idea:Now you see it, now you don't! It is not magic but the students' explanations can be magical. Students will be flashed a group of dots and have to identify how many were shown.

Ideas on Subtraction

1st Grade Math

Â» Unit:

Working with Numbers, Operations, and Story Problems

Big Idea:Story Problems, Subtraction Bingo, Dice, and Recording Sheets, it's a world of subtraction and opportunity is the key. Students are engaged in the subtraction concept through a variety of learning activities.

How Many In Your Box?

1st Grade Math

Â» Unit:

Counting & Comparing

Big Idea:Is it Box A or is it Box B? Maybe it is Box C? Which box has 18 items in it? The students are engaged in a counting activity in which pairs count and record the number of items in a collection box.

1.OA.C.5

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

1.OA.C.6

Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).