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Step-by-Step Experiments with Soils
Gina Hagler, Bob Ostrom
language (The Child's World, Inc., Jan. 1, 2014)Explains what soil is made from and what it contains; describes the scientific method; and includes experiments testing different soil concepts.
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Step-by-Step Experiments With Soils
Gina Hagler, Bob Ostrom
Library Binding (Childs World Inc, Jan. 1, 2012)Introduces the study of soils and the steps in the scientific method and outlines simple experiments that demonstrate the basic principles of soil composition, the creatures that live in soil, and how scientists work.
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