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## How Big Is a Leaf? Mathematical Modeling Through STEM Inquiry

Grade 4 students engage in problem solving through inquiry in an agricultural science context.

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## The Life and Times of a Third-Grade Pencil

Students determine the usable lifespan of a pencil in this mathematical modeling activity.

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## Introducing Grade 3 Students to Digital Data Exploration

Bar graphs are fundamental to display distributions of categorical variables in primary school. Here is an approach using TinkerPlots™ to create bar graphs on different representation levels in small and large data sets.

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## Exploring Relative Size with Relative Risk

The Relative Risk Tool web app allows students to compare risks relating to COVID-19 with other more familiar risks, to make multiplicative comparisons, and to interpret them.

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## GPS: Socially Distant Numbers

Growing Problem Solvers provides four original, related, classroom-ready mathematical tasks, one for each grade band. Together, these tasks illustrate the trajectory of learners’ growth as problem solvers across their years of school mathematics.

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## Palette of Problems

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

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## Palette of Problems – May 2014

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

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## Palette of Problems – April 2014

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

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## Palette of Problems – March 2014

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

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## Calendars and Solutions: December 2013 and January 2014

A set of problems of many types.