Divide By Zero

1. Cool ways present quadratic equations. Such as graphing, and calculating the hang time and max height in these. 172 ft dive – is a test question right now 10.7meter belly flop skateboard jumping great wall 2. Teaching students to use GeoGebra in Geometry. Designing dynamic figures, and utilizing the algebra features to make illustrations [...]

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I’ll take the bait, and put out a math lesson plan. I suppose its better late than never, though I may have missed out on the discussion for this one. Title of the Song: Iteration, Efficiency (or lack-thereof) and Counting Combinations, when it really maters. Objectives: Students are able to apply iteration (that they discover [...]

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is in it’s first version. I’ve gone through the progression of these sheets with my geometry class. At the beginning of each class I reviewed the factoring they’d learned up to that point, with a quick example, and not too much student input, and then we’d do an example together of the new type of [...]

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So I’ve been breaking my back for the last few days writing up a unit on factoring. All the problems get solved either by me in writing in LaTeX (for the answer key) or by Maxima (a godsend) which factors, simplifies, and prepares smoothies (if you upgrade to the Pro version). Maxima is free and [...]

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Based pretty solely on what my text book says, and what I’ve gleaned from a few other spots, I bring you a folder of stuff on factoring. This guy will be evolving over time but here it is at this moment. Shout out to Dan Greene for his work on factoring that is all available [...]

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Anybody wish they had an easier way to overlay a grid of arbitrary size over images? Maybe even plot lines/points/polygons over them? I used to wish that, but today I realized that my wish has come true. Yet another reason to love GeoGebra! Dan asks So let’s say I know what a meter looks like [...]

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