Find out all about science with fun step-by-step experimentsFind out all about science with fun step-by-step experiments Discover the world of science through easy-to-follow experimentsWhat are solids? How they are different from liquids and gases? How can solids be changed? Find out the answers to these questions and much more in Be a Scientist: Investigate Solids.This friendly, illustrated series shows how young scientists can use investigation to find out about science for themselves.