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Activities in the earth sciences

By Challand, Helen J Meents, Len W.
c1982., 5-8, Childrens Press Call No: J SCI 550.7 Availability:1 of 1 At Your Library Series Title: Science activitiesSummary Note: Activities and experiments--such as making charcoal, measuring shadows, and calculating the speed of sound--in the areas of astronomy, weather, and geology.

Activities in the life sciences

By Challand, Helen J Meents, Len W.
c1982., 5-8, Childrens Press Call No: J SCI 507 .8 Availability:1 of 1 At Your Library Summary Note: Presents a variety of experiments involving living organisms, including growing bacterial cultures, calculating the rate of seed germination, regenerating animals, and using urinalysis techniques.