and some more fun ones:

If you have kids that are into math, check out Richard Feynman’s favorite when he was a young boy: http://www.amazon.com/Geometry-Practical-Mathematics-Self-Study/dp/B000VUNMR2/ref=sr_1_9?ie=UTF8&qid=1398107094&sr=8-9&keywords=math+for+the+practical+man The series consists of Arithmetic, Geometry, Trigonometry, Algebra and Calculus – some are harder to get than others, but an immense pleasure to read! (also explains why Math education these days is…well…lacking.

http://www.fromquarkstoquasars.com/know-your-scientist-richard-feynman/