High school science teacher Tom Robinson shows you how to expand your scientific horizons-from biology to chemistry to physics to outer space. You'll discover answers to questions like: Is it possible to blow up a balloon without actually blowing into it? What is inside coins? Can a magnet ever be "turned off"? Do toilets always flush in the same direction? Can a swimming pool be cleaned with just the breath of one person? You won't want to wait for a rainy day or your school's science fair to test these cool experiments for yourself! Tom Robinson teaches high school science and math and has coauthored an online advance placement physics course.

    From the tiny island nations of Comoros, Seychelles, and S�o Tom� and Pr�ncipe, to its largest country, Africa is the only continent with land in all four hemispheres. Unlike any other continent, it is divided into two almost equal lengths by the equator, and it is nearly as wide as it is long.Enter into the daily life of children in the many countries of modern Africa. Countering stereotypes, Africa Is Not a Country celebrates the extraordinary diversity of this vibrant continent as experienced by children at home, at school, at work, and at play.The title says it all. Instead of the 'vanishing tribes' view of one Africa with tourists from different countries photographing the animals and primitive people, this informative picture book celebrates the diversity of the 53 nations that make up the continent today. . . readers will want to go on from here to explore in depth particular countries that interest them. The essential differences and connections are here. --Booklist