Hello, reader! If you intend to post a link to this blog on Twitter, be aware that for utterly mysterious reasons, Twitter thinks this blog is spam, and will prevent you from linking to it. Here's a workaround: change the .com in the address to .ca. I call it the "Maple Leaf Loophole." And thanks for sharing!

Monday, October 29, 2012

How Bad Is Your Line?

This is ripped right off from PCMI 2011 Day 11. But I'm liking the Geogebra I made for it to calculate the sum of squares. Enjoy!