Use these descriptions of diagnostic and instructional tools to help young learners move beyond reliance on physical materials to negotiate arithmetic tasks.
*Jonathan N. Thomas, email@example.com, is an assistant professor of mathematics education at Northern Kentucky University and a Kentucky Center for Mathematics faculty associate.
*Pamela D. Tabor, firstname.lastname@example.org, is a school-based elementary math specialist in Harford County, Maryland.
© 2020 National Council of Teachers of Mathematics (NCTM)
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