Maria Droujkova and Yelena McManaman expected to answer questions about math when they came out with their first book, "Moebius Noodles: Adventurous Math for the Playground Set," earlier this year.

MATH is a tricky subject; for some it is fun while for others it is a nightmare and this is where the website Math Playground comes in handy. It can change your nightmare into a wonderful dream and ...