teaching resource

Rearranging Parts – Instructional Slide Deck

Updated: 08 Jun 2023

Learn how to decompose numbers less than or equal to 10 into pairs in more than one way with this instructional slide deck.

Editable: Google Slides
Pages: 1 Page
Grades: K - 1

Curriculum

CCSS.MATH.CONTENT.K.OA.A.1

Represent addition and subtraction with objects, fingers, mental images, drawings1, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
CCSS.MATH.CONTENT.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.
CCSS.MATH.CONTENT.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).
CCSS.MATH.CONTENT.1.OA.B.3

Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 ...
CCSS.MATH.CONTENT.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 - ...

teaching resource

Rearranging Parts – Instructional Slide Deck

Updated: 08 Jun 2023

Learn how to decompose numbers less than or equal to 10 into pairs in more than one way with this instructional slide deck.

Editable: Google Slides
Pages: 1 Page
Grades: K - 1

Learn how to decompose numbers less than or equal to 10 into pairs in more than one way with this instructional slide deck.

Part Part Whole Relationships

Rearranging parts is an early strategy students can use when working on addition and subtraction problems. It works well when using concrete materials to demonstrate that the whole is still the same while changing the parts.

This instructional slide deck aims to demonstrate the strategy using counting cubes. Encourage your students to use physical manipulatives to match those shown in the slide deck.

Through this activity, students will learn multiple ways to practice the rearranging parts strategy.

Tips for Differentiation + Scaffolding

A team of dedicated, experienced educators created this resource to support your math lessons.

If you have a mixture of above and below-level learners, check out these suggestions for keeping students on track with the concepts:

🆘 Support Struggling Students

Help students who need help understanding the concepts by giving them concrete materials to match with the examples used in the teaching presentation.

➕ Challenge Fast Finishers

Extend students by encouraging them to give examples of when they believe it is best to rearrange parts.

Easily Prepare This Resource for Your Students

This resource downloads as an editable Google Slides document.

This resource was created by Kendall Britnell, a teacher in Colorado and a Teach Starter collaborator.

Curriculum

CCSS.MATH.CONTENT.K.OA.A.1

Represent addition and subtraction with objects, fingers, mental images, drawings1, sounds (e.g., claps), acting out situations, verbal explanations, expressions, or equations.
CCSS.MATH.CONTENT.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.
CCSS.MATH.CONTENT.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).
CCSS.MATH.CONTENT.1.OA.B.3

Apply properties of operations as strategies to add and subtract.2 Examples: If 8 + 3 = 11 is known, then 3 + 8 = 11 is also known. (Commutative property of addition.) To add 2 + 6 + 4, the second two numbers can be added to make a ten, so 2 + 6 + 4 ...
CCSS.MATH.CONTENT.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 - ...

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