Math Books

Learning discrete math (with DUCKS)

What could be better than learning math with silly problems and situations! Source: Discrete Mathematics with Ducks by Sarah-Marie Belcastro http://books.google.ca/books?id=UYtlK8waqasC&lpg=PA73&pg=PA103#v=onepage I’m definitely considering this book for when I start teaching Discrete Math!

Caution!

This is in a textbook: CAUTION!The area of a washer is pi*R^2-pi*r^2, which you can simplify to pi*(R^2-r^2), but not to pi*(R-r)^2. No matter how tempting it is to make the latter simplification, it’s wrong. Don’t do it.