BOOKS by Helen Challand

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1	Activities in the Physical Sciences more books like this by Helen J Challand, Linda Hoffman Kimball (Illustrator) add to wishlist Gives instructions for a variety of simple experiments that illustrate some basic principles of physics and chemistry. see all copies from $1.99! new only from $1.99! \| first editions \| SVS
2	Activities in the Life Sciences more books like this by Helen Challand, Len W. Meents (Illustrator) add to wishlist Presents a variety of experiments involving living organisms, including growing bacterial cultures, calculating the rate of seed germination, regenerating animals, and using urinalysis techniques. see all copies from $1.99!
3	Activities in the Earth Sciences more books like this by Helen J. Challand, Len W. Meents (Illustrator) add to wishlist Activities and experiments--such as making charcoal, measuring shadows, and calculating the speed of sound--in the areas of astronomy, weather, and geology. see all copies from $1.99! SVS
4	Earthquakes more books like this by Helen Challand add to wishlist Briefly describes the earth's interior, the forces and stresses that sometimes cause the ground to shake, and the effects of such movement. see all copies from $1.99! first editions \| SVS
5	Science Projects and Activities more books like this by Helen J Challand, Linda Hoffman Kimball (Illustrator) add to wishlist Gives instructions for science projects and experiments involving an ant colony, a chicken brooder, plant grafting, microphotography, water purification, and other topics. see all copies from $1.99! new only from $5.00! \| SVS
6	Plants Without Seeds more books like this by Helen Challand add to wishlist Examines the characteristics of simple plants that do not have seeds, including algae, fungi, lichen, mosses, and ferns, with a brief look at bacteria. see all copies from $1.99! SVS
7	Experiments with Magnets more books like this by Helen Challand add to wishlist Suggests experiments introducing magnets and magnetism, demonstrating the magnetic field and the properties, strength, and uses of magnets. see all copies from $1.99! SVS
8	Experiments with Electricity more books like this by Helen Challand add to wishlist A discussion of the properties of electricity, with several related experiments, and an introduction to different kinds of batteries. see all copies from $1.99! first editions \| SVS
9	Vanishing Forests more books like this by Helen J Challand add to wishlist Describes the major types of forests on Earth, their current status, and the environmental problems they face. see all copies from $1.99! first editions
10	Volcanoes more books like this by Helen J Challand add to wishlist Discusses what causes volcanoes, where they are likely to occur, and how scientists study them. see all copies from $1.99! SVS
11	Disappearing Wetlands more books like this by Helen Challand add to wishlist Examines the ecological role of wetlands and discusses how they are formed, what life they support, and how people modify or destroy them. see all copies from $1.99! first editions
12	New True Books: Volcanoes more books like this by Helen J Challand add to wishlist Children's Press is pleased to introduce True Books for a new generation! Completely redesigned for today's young, investigative reader, True Books are an indispensable addition to any collection. Each book guides the reader through the facts that nurture their need to know. The new, dynamic True Books design features: -- an inviting and ... see all copies from $1.99!
13	New True Books: Earthquakes more books like this by Helen Challand add to wishlist see all copies from $4.09!
14	Experiments with Chemistry more books like this by Helen Challand add to wishlist A brief introduction to chemistry, discussing atoms, molecules, the periodic chart, chemical changes, and states of a matter. Includes simple experiments. see all copies from $1.99! first editions \| SVS
15	New True Books: Experiments with Magnets more books like this by Helen Challand add to wishlist Children's Press is pleased to introduce True Books for a new generation! Completely redesigned for today's young, investigative reader, True Books are an indispensable addition to any collection. Each book guides the reader through the facts that nurture their need to know. The new, dynamic True Books design features: -- an inviting and ... see all copies from $1.99! new only from $71.88!
16	New True Books: Experiments with Electricity more books like this by Helen Challand add to wishlist Children's Press is pleased to introduce True Books for a new generation! Completely redesigned for today's young, investigative reader, True Books are an indispensable addition to any collection. Each book guides the reader through the facts that nurture their need to know. The new, dynamic True Books design features: -- an inviting and ... see all copies from $1.99! SVS
17	Experiments W/Chemistry more books like this by Helen J Challand add to wishlist see all copies from $1.99!
18	Circle City more books like this by Helen J Challand add to wishlist Discusses what causes volcanoes, where they are likely to occur, and how scientists study them. see all copies from $206.44!

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