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A cartoon that explores long division is coupled with a full-page activity sheet.

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A cartoon involving astronomy and astronomical units is coupled with a full-page activity sheet.

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Sailor Monkeys

little problems with big solutions

Sherri L. Baer and Edward S. Mooney

Two problems involving grouping invite students to devise their own model and strategies.

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Nirmala Naresh and Bridget Royce

Students design game boards and gather experimental data to better understand the hidden mathematics in a common television game show.

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Jenny Salls

Gain insight into students' understanding of the concept of fraction as operator as well as their reliance on rote procedures to convert fractions to decimals.

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Sherri L. Martinie

Teachers who are skilled at recognizing students' misconceptions about decimals are better equipped to make instructional decisions that build on these ideas.

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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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Aliza Libman Baronofsky

An activity explores whether a fraction will terminate or repeat. Activity sheets are included.

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Amy E. Hunter, Sarah B. Bush, and Karen Karp

Consider this research-based intervention approach to ratio using concrete, semiconcrete, and abstract representations to help students who struggle with this concept.

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Math for Real: How Much Time Will Lena Save?

“when will I ever use this?”

Dan Miltner

This problem ties in the Pythagorean theorem while two people walk around or across a park.