Full issue PDF of Arithmetic Teacher volume 33, number 6 (February 1986).
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What prevents all students from having
opportunities to engage in mathematical tasks? We identify each challenge, share
instructors’ common frustrations, and offer strategies.
Putting a twist on a popular mathematical tool, this collection
of activities shows how putting a number 1 in the bottom-left cell and a 100 in
the top-right cell can better support student reasoning.