For numeracy, may I throughly recommend the Bill handley book, Speed Mathematics.
I learned of his teaching skills years ago, and using his system, I can multiply or divide two three digit numbers in my head quicker than most people can type the same into a calculator. Great party trick. People afford you respect when they see you do it, it makes them think your some kind of high IQ, genius type bod.
I'm not though. Far, far from it
