This extensive collection of do-it-yourself projects ranges from simple ideas using household materials to sophisticated plans which are unique.--Booklist "[There are] many good projects."--Appraisal "The directions are clear and straightforward."--VOYA From a device that makes sounds waves visible to a unique "pomato" plant, these 100 imaginative and impressive science projects will impress science fair judges and teachers--and astound all the kids in the school. Some of the experiments can be completed quickly, others take more time, thought, and construction, but every one uses readily available materials. Budding Einsteins can make their own plastic, build a working telescope, or choose from a range of ideas in electricity, ecology, astronomy, and other scientific fields.