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## Let’s Give Them Something to Talk About

Different types of open tasks can be used as a tool to promote rigorous student mathematical discourse and considerations for facilitation.

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## Two Technology Frameworks: Their Use in Lesson Design

The authors used two technology frameworks to design three seventh-grade mathematics lessons, focusing on opportunities to address collaboration, authenticity, or personalization.

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## Adapt It! Adapting Stories and Technology for Engagement in Geometry

A task to develop and provide access to mathematics for all.

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## Build It! The Rectangle Game

Discover technology-enhanced, game-based tasks and student generalizations.

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## The Do Nothing Machine

The Trammel of Archimedes traces an ellipse as the machine’s lever is rotated. Specific measurements of the machine are used to compare the machine’s actions on GeoGebra with the graph of the ellipse and an ellipse formed by the string method.

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## Using Mathematics to Design a Droid

Teachers have the opportunity to make mathematics relevant. We leveraged the popularity of Star Wars to engage students in exploring and connecting two dimensions and three dimensions to careers in toy design.

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## Algebraic Thinking in the Context of Spatial Visualization

This pattern-related problem, appropriate for high school students, involves spatial visualization, promotes geometric and algebraic thinking, and relies on a no-cost computer software program.

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## Improving Our Criticism of Technology in Mathematics Education

Rather than centering technology, we need to view tools as raw materials that students can use strategically to build mathematical knowledge.

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## Turning Trucks Into a Meaningful Geometry Exploration

Learn how to engage students in geometry concepts through a real-world task that leverages GeoGebra to provide students with generalization and authorship opportunities.

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## Enacting Co-Craft Questions Using Flexible Teaching Platforms

Teachers can implement a mathematics language routine within in-person/hybrid and remote instructional contexts.