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Janet Sharp and Rachael M. Welder

Students notoriously struggle with division of fractions in 5 key areas. Hear what those 5 areas are and how recommendations address the limitations.

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Andrew M. Tyminski and James K. Dogbey

Division of fractions, a troublesome area for students, is looked at anew using a common denominator algorithm.

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Math For Real:The Half-Lives of Medicines

when will I ever use this?

Alyssa Hoslar

Calculating a half-life, the approximate time it takes for the body to remove one-half the active ingredient in a medicine, provides the real-life tie-in to this activity.

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Diana L. Moss and Lisa Poling

Students explore the mathematics found in chocolate production.

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Alfinio Flores and Melina D. Priewe

Students explore multiplicative comparisons and the meaning of remainders using their own concrete representations, including orange wedges.

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Debra I. Johanning and James D. Mamer

Developing number and operation sense associated with fraction division is viewed from multiple perspectives: modeling, equivalence, and symbolism.

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Redeem Reasoning

readers speak out

Kuo-Liang Chang

This opinion piece discusses how simplicity, ease, and efficiency—in the guise of shortcuts, tips, and packed procedures—kill mathematical reasoning.

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Juli K. Dixon and Jennifer M. Tobias

Anticipate and address errors that arise when fractions are placed in context and illustrated with models.

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Casey Hord and Samantha Marita

Support math conversations and teach students to approach various problem-solving tasks by encouraging the use of tables.

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Natalya Vinogradova and Larry Blaine

The Maximum Chocolate Party game requires students to divide and compare fractions in a practical and concrete context.