See Inside How Things Work Usborne Flap Book Halloween ) to mix up batches

) to mix up batches of unidentified alien slime and conduct tests on them to analyze and investigate their special properties

Learn about gears

and fun games―all in one 5th grade workbook

23g) darts with Neodymium magnets that will work on any magnetic dartboard

- Learning Through Play - Enhances cognitive development by encouraging logical reasoning

See Inside How Things Work Usborne Flap Book Halloween ) to mix up batchesAn amazing flap book packed with inventions, machines, gadgets and devices, and facts and information about how they work. Over 90 flaps reveal the insides of car engines, toilets, escalators, submarines and microwaves, and many, many other machines. Includes internet links to websites with animations, games, and experiments. 978079452406, 9780794524067, 9780794530440