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We All Have Something That Has to Do with Tens: Counting School Days, Decomposing Number, and Determining Place Value

Anne Goodrow and Kasia Kidd 

September 2008, Volume 15, Issue 2, Page 74

Abstract:
How the activity of decomposing numbers—having students write numerical expressions equivalent to the number of days in school—can help students develop an understanding of place value. Examples are included that show teahers how to use this activity in the classroom.

Keywords:
Pre-K-2
Curriculum Developer
Addition and Subtraction
Conceptual Development
Connections / Applications
Curriculum
Math Coordinator / Coach
Teacher
Problems
Student Work
Representation