Gr 3–6—Each of the major types of rock—sedimentary, igneous, and metamorphic—receives its own treatment as do fossils, crystals, the rock cycle, and minerals in this selection. (Soil is the sole volume that is not directly about rocks.) Main ideas, such as the three rock types and the rock cycle, are repeated to some degree in nearly every volume, resulting in a series that walks a fine line between reinforcing concepts and being redundant. The layers of the earth and Martian rocks also appear more than once. The potential uses of various rocks are discussed, as are occasional issues, such as the impact of mines and mining on the environment.
These books present fourth graders with basic information about rocks in rather choppy texts; Cycle focuses mainly on processes, while the others include details on classification, chemistry, and examples of familiar sites such as the Grand Canyon. Photographs of rock samples and land formations clearly illustrate their important features, and helpful diagrams illustrate geological concepts. There are four other fall 2016 books in this series. Reading list. Glos., ind. Review covers the following Geology Rocks! titles: Sedimentary Rocks, Metamorphic Rocks, The Rock Cycle, and Igneous Rocks.
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