Scientific American, Winning Science Fair Projects, Grades 5-7 (LIB)

Friedhoffer, Bob: - Bob Friedhoffer's books on science and magic include: YET MORE MAGIC TRICKS, SCIENCE FACTS, OLD MAGIC AND TODAY'S SCIENCE, PHYSICS LAB IN THE SPORTING GOODS STORE, PHYSICS LAB IN THE PLAYGROUND, PHYSICS LAB IN THE SUPERMARKET, PHYSICS LAB IN THE HOME, MAGIC AND PERCEPTION, TOYING AROUND WITH SCIENCE, THE SCIENTIFIC MAGIC SERIES-MATTER AND ENERGY; FORCES, MOTION AND ENERGY; HEAT; SOUND; ELECTRICITY AND MAGNETISM; AND LIGHT-MAGIC TRICKS, SCIENCE FACTS; HOW TO HAUNT A HOUSE FOR HALLOWEEN.