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

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

    Anne Goodrow and Kasia Kidd
    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.