Tag Archives: Paper Folding

Conic Sections, Educational Technology, Math Software

The Folded Circle Construction

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Of all the conic section construction techniques, my favorite is undoubtedly the approach that requires nothing more than a paper circle. Here's what to do: Draw or print a circle and its center, point A, on a sheet of paper. Cut out the circle. Mark a random point B anywhere on the circle. Then, fold … Continue Reading ››
Conferences

A Swan Song for Sweet Karen Coe

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Today I leave for my first proper vacation in a year and a half. Last time I took such a vacation, Key sold its high school textbooks to Kendall Hunt and transformed from a publishing company to a educational technology company. This time I just hope to survive the end of the world. 🙂 Before … Continue Reading ››
Math Software

What’s up with Key? A Response to Dan Meyer

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The other week Dan Meyer sent out this tweet. While we appreciate the compliment (and the resulting increase in traffic), it's the first part of that sentence … Continue Reading ››