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Jon Orr

In my classroom, the Desmos® calculator has been a game-changer for student understanding of relationships between graphs and algebraic representations of functions. We use this beautifully designed website every day. Lately, the Desmos class activity site ( and the new Activity Builder tool have proven especially useful by allowing me to provide my students with opportunities to struggle productively, create, error-check, and think deeply to learn mathematics. Activity Builder is the easiest tool I have found to set up and to run an activity that promotes these ideas in your classroom.

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Jon Orr and Kyle Pearce

Wondering how to create a classroom culture where students don't want to stop exploring mathematics when the bell rings? We were too and that's why we teammed up to uncover how we can Make Math Moments That Matter for every student in the math classroom with a weekly podcast.