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 I’m definitely considering this book for when I start teaching Discrete Math!


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.