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Ignite Talk (Video) • Technology and the Curious Mind


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Last December I joined nine other educators in giving an Ignite talk at the CMC North 2014 conference in Asilomar, CA. The event was organized by the wonderful folks at The Math Forum. They’ve begun posting video of the talks on their website. I’ve embedded mine below for your viewing and/or heckling pleasure. Technology and the Curious Mind Postscript I wrote a few words about the experience …

CMC North 2014 Ignite


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An Extra Jolt of Fear I gave an Ignite talk (5 minutes, 20 slides, ready-or-not auto-advance every 15 seconds) at this year’s CMC North conference in Asilomar. (Video of the talk is here.) It was quite possibly the most fun I’ve had at any math conference. In the hours leading up to the event, I was more than a little nervous. Then I …

Desmos: Dot Capture Game


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I created a silly little game for my Algebra 1 students several weeks ago. The motivation? Five-fold! We’re a little weak with graphing lines. Some open-ended, Desmos-driven, instant-feedback style practice may help. Domain and range? Yeah, not so much. Inequalities? Haven’t done them justice. Yet. (Growth mindset, baby!) Vertex form for quadratics? Still struggling. We tried Des-man a few days before this game …

Desmos Hack: One-Variable Inequalities


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I was typing out solutions to an Algebra 2 assessment the other day. Question 3 on the assessment asks students to solve an equation involving absolute value. I began my solution with this… …and then launched into an algebraic confirmation of that solution. Now on the one hand, throwing a Desmos-generated graph into a “detailed solutions” handout is a great move because, well, just look at it. It’s beautiful. …

10 Free Tools…


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This summer I’m offering a two-day math and technology workshop series for JH and HS teachers. The purpose of the workshop? Equip teachers with digital tools and skills that will help them engage students, promote the CCSSM mathematical practices, and “multiply our hours” as teachers. The workshop runs twice this summer: June 5-6 and June 23-24. If you’re going to be in …


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Desmos in my Pocket


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A cool thing happened in Algebra 1 today. We’ve been working our way through an “Applications of Quadratics” unit (one that needs a healthy dose of revision in the near future). Today: projectile-motion problems. The basic flow for each scenario: Set the context (catapult, arrow, ball from roof, etc.) Substitute an input, evaluate, explain the result in context Substitute an output, solve, explain the …