Calculus: A word that triggers involuntary fear spasms in the best of us. But the days of slogging through tedious textbook derivatives are over, if you want them to be. For the past few years, people across the world have studied calculus for free online, by exploring a set of gorgeous, dynamic animations.
The best part about growing up in Michigan, besides my pet wolverine, was the abundance of snow days. But a school district in Ohio is threatening to destroy the sacred snow day by making kids learn. On the internet.