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### Power of a Point

9-12

Use this tool to investigate what happens when point P is moved to various points within, on, and outside the circle. What, if any, relationships can you identify among the segments and radius?

### Visualizing Complex Roots of a Quadratic Equation

9-12

This lesson is based on the MTLT article, *“Visualizing Complex Roots of a Quadratic Equation”*by Thomas Edwards, S. Asli Özgün-Koca, and Kenneth Chelst. In this lesson students use various tools to discover the geometric relationship between complex roots of a quadratic equation and the graph of the associated quadratic function.

### Pythagoras, PVC Pipes, and Pianos

9-12

This lesson is based on the *MTLT*article,

*"Pythagoras, PVC Pipes, and Pianos"*by Danielle Divis. The lesson uses a music-related activity to engage students in using and connecting multiple representations of exponential growth.

### Math Metaphors

6-8, 9-12

In this lesson, students create metaphors to capture and explore their experiences as learners of mathematics with respect to their identity, sense of agency, and emotions. ### Supporting Black Students’ Mathematical Identity

6-8, 9-12

In this lesson, students will explore the historical and contemporary contributions of the continent of Africa, which includes its resources and people. Through engaging activities and discussions, students will develop a strengthened mathematical belonging by connecting with the rich heritage of Africa, fostering a sense of pride and recognition in their own black identity.