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## Using Scratch Programming to Explore Coordinates

We present a Scratch task we designed and implemented for teaching and learning coordinates in a dynamic and engaging way. We use the 5Es framework to describe the students' interactions with the task and offer suggestions of how other teachers may adopt it to successfully implement Scratch tasks.

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## Danger! Animals in the Mathematics Classroom

In our attempts to make a concept easier, we may hinder student learning.

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## Decomposing Rectangles

Students are given a problem to break down rectangles.

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## Investigating a Super-Bear

Three inquiry-based tasks highlight the planning, classroom discourse, positive results, and growth in one class's journey.

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## A Leg Up on the Metric System

Students use a super-hero theme to compare the imperial system to the metric system.

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## Letters to the editor

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## May 2019 Calendar and Solutions

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## Problems

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

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## Prove It to Me!

Engage your learners through tasks proven to significantly promote reasoning and problem solving, which touch on many of the Mathematics Teaching Practices in Principles to Actions: Ensuring Mathematical Success for All. These tasks are discussed in this article, another installment in the series.

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## Threatened to extinction

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.