Scientific American, Winning Science Fair Projects, Grades 5-7 - Bob Friedhoffer

Detalii:

n nEVERYTHING YOU NEED TO KNOW FOR WINNING SCIENCE FAIR PROJECTSn nLearn Experiments that help you to: n nBuild Electric Circuitsn nCreate an Object that Has Only One Siden nBreak Light into its Component partsn nCreate Static Electricityn nDiscover How Light Worksn nFind Out Why Earth Rotates and What Keeps Us on the Groundn nExamine How Waves Workn nDiscover Your Green Thumbn n n nFeaturing Experiments in: n nElectricityn nElectromagnetismn nGravityn nPlant Growthn nLight and Opticsn nSurfacesn nReaction Timen nCentrifugal Forcen nSound Wavesn n n nGrades 5- 7n

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55.52 ^RON

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Vânzător: Libris.ro
Brand: Bob Friedhoffer