I'll post this in all the math threads for awhile because it's cool. Bedtime Math co will e-mail you a new word problem every day if you scroll to the bottom and join the e-mail list. It's not even a sales pitch, just a friendly public service math problem every day. I. <3. Them. smile
http://bedtimemathproblem.org/

Youth lives by personality, age lives by calculation. -- Aristotle on a calendar