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Compose Decompose Numbers Primary Lessons

Numberblocks –

Numberblocks – Build concepts of composing, decomposing, adding, subtracting. Unfix Cubes are suggested to go along with this. Can be done with a whiteboard, but the hands on building is important. One – Learn to count to five using the number one. Two – Add and subtract 1 to make number 2 bigger or smaller.…

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Number Talk Videos – First Grade

First Grade – Use other successful students to model for other students by having them repeat.  This video shows how a teacher helps her students listen to and repeat a classmate’s thinking. First Number Talk Problem Solving and Number Sense Solve Ten Frames in Different Ways  

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Decompose, Branching, and Number Bonds Video Lessons for Teachers (K-2)

This resource provides strategies and tools for decomposing numbers through the use of branching. Branching* is simply a strategy of breaking apart and associating numbers in a way that creates friendly landmark numbers. This directly ties to the Common Core standards tagged in this resource as the focus of branching is based on place value…

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Math and Reading Online Games

Sum Dog – Free educational games that motivate your students to practice math and Reading – while you have full control over what they learn. Students play educational games against others worldwide, while teachers control what they learn. It uses a learning engine which understands each student, tailoring questions to their individual needs. Set up…

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Decompose Numbers Worksheets

Decompose Numbers Worksheets – Break apart numbers with two addends or more with theses worksheets designed to teach how to decompose whole numbers. Can be used in first grade at the end of the year, second grade, third grade and can be used in fourth grade to introduce breaking apart (distributive property) of double-digit multiplication. …

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