Can close proximity provide Jake, Bailey, and Sam the chance to find out if three is the magic number?Jake's search for love, the one thing that has been missin

This “enjoyable” biography of the brilliant astronomer will intrigue young people who are “bored with the textbook approach to science” (The New York Ti

Magical see-through pages flip back and forth to mix and reveal counting surprises.

Martin Gardner's Mathematical Games columns in Scientific American inspired and entertained several generations of mathematicians and scientists. Gardner in his

A key challenge sales professionals confront is how to measure the various activities they perform in the sales planning, selling and execution, and post-sales