Before the Internet became widely known as a global tool for terrorists, one perceptive U.S. citizen recognized its ominous potential. Armed with clear evidence of computer espionage, he began a highly personal quest to expose a hidden network of spies that threatened national security. But would the authorities back him up? Cliff Stoll's dramatic firsthand account is "a computer-age detective …
A Question of Math uses a recurring cast of young, multiethnic characters along with a mathematical creature called Digit to introduce young readers to fundamental math concepts -- including subtraction, division, multiplication, addition, counting, and measuring -- that they can find at school, play, and home. With a clear, straightforward question-and-answer text, lively illustrations, and si…
Small children love to act out simple rhymes! This collection features classic favorites like Incy Wincy Spider, Pat-a-Cake and One Potato, Two Potato in a sturdy board book format that is ideal for sharing with babies and toddlers.
everytime music stops, one more monster is out!'
As six monsters play a wild game of musical chairs, readers learn to subtract - one chair at a time.'
Easy book to learn the substraction tables all by yourself.'
Substraction is explained through the example of a boy cleaning out his crowded toy box so his toys will fit into it.'