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Stephen Phelps

Edited by Anna F. DeJarnette

A monthly set of problems targets a variety of ability levels.

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P. Reneé Hill-Cunningham

Hundreds of species of animals around the world are losing their habitats and food supplies, are facing extinction, or have been hunted or otherwise negatively influenced by humans. Students learn about some of these animals and explore multiple solution strategies as they solve this month's problems. Math by the Month features collections of short activities focused on a monthly theme. These articles aim for an inquiry or problem-solving orientation that includes four activities each for grade bands K–2, 3–4, and 5–6.

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Gemma F. Mojica, Christina N. Azmy, and Hollylynne S. Lee

Concord Consortium's Common Online Data Analysis Platform (CODAP), a free Web-based data tool designed for students in grades 6-12 and higher, is continuously being updated and developed for diverse projects in data science, science education, and mathematics/statistics education (https://codap.concord.org/). Teachers and students can access CODAP without downloading software or registering for accounts. Although some Web-based technology tools provide certain features for free and require users to pay a fee to use additional features, CODAP has no hidden costs. Devices need only be connected to the Internet using an updated Web browser (Chrome is preferred). CODAP is not optimized (yet) for use on such touchscreen devices as tablets or iPads®.

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Natasha E. Gerstenschlager and Jeremy F. Strayer

Short, mathematical discussions can elicit students' reasoning and focus on foundational ideas.

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Stephen Phelps

Edited by Anna F. DeJarnette

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

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Susan A. Peters, Michelle Gross, and Amy Stokes-Levine

Redesigning a statistics unit allows seventh graders to produce an engaging and authentic investigation.

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Erin E. Krupa, Mika Munakata, and Karmen Yu

Can you remember your typical elementary school field day? In this article, we provide details on hosting a mathematics field day, focused on embedding rich mathematics into authentic fun-filled field day experiences.

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Edited by Anna F. DeJarnette and Stephen Phelps

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

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Edited by Anna F. DeJarnette and Stephen Phelps

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

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Kelly W. Remijan

These four activities connect mathematics to science, technology, engineering, and art.