Christine Petersen

"Unearth Fossils introduces readers to the different types of fossils and how they form. Learn about key fossil finds, scientists who made important discoveries and contributions to the study of fossils, and how we use fossils today in the form of fossil fuels. A geology-themed project provides the opportunity for hands-on experience. Other features include a table of contents, fun facts, infographics, sidebars, and an index. Aligned to Common Core...

A close look at past and present invertebrates, including sponges, jellies, worms, mollusks, and arthropods.

Discusses events leading up to the 1986 Iran-Contra scandal, wherein the Reagan administration sold guns to Iran in exchange for hostages and assisted rebels trying to overthrow the government of Nicaragua.

"Explore the life of a colonial tanner and his importance to the community, as well as everyday life, responsibilities, and social practices during that time"--Provided by publisher.

Explores the life of a colonial surveyor and his importance to the community, as well as everyday life, responsibilities, and social practices during that time.

"Explore the life of a colonial tailor and his importance to the community, as well as everyday life, responsibilities, and social practices during that time"--Provided by publisher.

"Investigate Gems introduces readers to what gems are and how they form, including mineral gems and organic gems. Learn about crystal systems, imitation and synthetic gems, cultured pearls, how gems are used, and their historic importance. A geology-themed project provides the opportunity for hands-on experience. Other features include a table of contents, fun facts, infographics, sidebars, map, and an index. Aligned to Common Core Standards and correlated...

"Discover Rocks introduces readers to what rocks are and how they form. Real-world examples bring to life igneous, sedimentary, and metamorphic rock. Full-color photographs will draw in readers while the easy-to-read text breaks down complex concepts. A diagram of the rock cycle ties everything together and a geology-themed project provides the opportunity for hands-on experience. Other features include a table of contents, fun facts, infographics,...