Distributed Sensor Networks

This is a coin collector’s dream folder! Not only does it have a space for every state’s quarter—arranged according to year—but now it has slots for the six brand-new quarters that the United States Mint is issuing. These latest coins will honor the District of Columbia, along with five U.S. territories: the Commonwealth of Puerto Rico, Guam, American Samoa, the U.S. Virgin Islands, and the Commonwealth of the Northern Mariana Islands. Not only will this handy folder help collectors hold on to these special keepsakes, but it includes a description of the Commemorative Coin Program; the new District of Columbia, and five U.S. territories programs; a history of the United States Quarter Dollar; details on how the designs were chosen; and an account of how coins are manufactured by the Mint and distributed by the Federal Reserve Bank.

A latest installment in the science- and math-based board book series provides a colorful, simple introduction to the study of how the creation of machines and computing systems is inspired by the net

This delightful Halloween board book with a touch-and-feel element on every spread will become a holiday favorite, when preschoolers follow the misadventures of Sebastian, Doc’s motion-sensor ghost th