Wants vs. Needs vs. Robots

"A group of robots demonstrates the difference between a want and a need, by making trades to get some things they really want and accidentally giving away some things they really need"--

Michael Rex (mikerexbooks.blogspot.com) has written and/or illustrated over forty children's books, including Facts vs. Opinions vs. Robots, Eat Pete, With Any Luck, I'll Drive a Truck (by David Friend), and the New York Times #1 bestseller Goodnight Goon, as well as the Fangbone series (which has also been turned into an animated TV series). He has a master's degree in visual arts education (K-12) and worked as a New York City art teacher for four years. He lives in Leonia, New Jersey, with his wife and their two sons.