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!
Infinity is scary… Dedication in textbook: To my grandson…
10/10/10 Day according to google: And: Spiked Math’s take on 10/10/10 Day.
(via Spiked Math) Patch Notes 1.02a “Mathematics will never be the same.” Introducing Probability 2.0 Upgraded probability to include real numbers in the range from 0 to 2. Switching in the monty hall problem is now the same as not switching. Due to high demand, correlation now implies causation. Graph Theory Features Fixed glitch in …
I wouldn’t mind having this one.
(via Reddit) This was posted by ooglag on Reddit who says it’s from John Zelle’s Python Programming, although it’s pretty common in other text books as well. It also reminds me of google: http://www.google.ca/search?q=recursion
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.