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December 2016 January 2017 Problems

Stephan Pelikan, Anna F. DeJarnete, and Stephen Phelps

A monthly set of problems is aimed at a variety of ability levels.

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Moving to a New City

E. Fanny Sosenke and Tala Councilman

A real-world problem about the cost of moving one's household from one city to another.

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Zero Pairs: Learning about Additive Inverses

Kasandra Dickman and Laura Bofferding

This department explores a game used to help students learn about additive inverses, or “zero pairs.” Authors describe some common reasoning that students used while playing the game and provide activity sheets geared toward students in grades 5–7.

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Attending to Precision with Secret Messages

Courtney Starling and Ian Whitacre

Introduce your students to a fun and innovative game to encourage precise communication

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Burgers and Fries: Exploring Equivalent Expressions

Frieda Parker and Vida Treviño

This activity engages students in a lesson about algebraic relationships concerning groupings of hamburgers and French fries, coupled with full-page activity sheets.

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November 2016 Problems

Stephan Pelikan, Anna F. DeJarnette, and Stephen Phelps

A monthly set of problems is aimed at a variety of ability levels.

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Selecting and Sequencing Students' Solution Strategies

Erin M. Meikle

For orchestrating whole-class discussions, note these suggestions to fine tune problem-solving techniques into cognitively challenging tasks.

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Star Cups Forever

Aina K. Appova

Students analyze the probability of receiving a lifetime of free coffee.

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Welcome to the Real World

A cartoon exploring a problem about salaries, wages, and percentages is coupled with a full-page activity sheet.

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Chivalry, at Least “Math Chivalry,” Is Not Dead!

A cartoon exploring a problem about order of operations is coupled with a full-page activity sheet.