Includes the following Great Explorations in Math and Science (GEMS) guides: Animal Habitats; Bubble-ology; Color Analyzers; Crime Lab Chemistry; Earth, Moon and Stars; Electric Circuits; Fingerprinting; Hot Water and Warm Homes from Sunlight; In All Probability; Mapping Animal Movements; Math on the Menu; Messages from Space; Microscopic Explorations; Mystery Festival; Quadice; Of Cabbages and Chemistry; OObleck: What Do Scientists Do?; Plate Tectonics; Paper Towel Testing; Ocean Currents; Only One Ocean; Schoolyard Ecology and Vitamin C Testing.