Teach your 6th graders the basic principles of classification, heredity, genetics, periodic table of elements, states of matter, fluids, astronomy, rock cycle, muscular system, body stewardship, and more. Full-color pages show large photographs and scenes that are used to showcase concepts and systems; vocabulary, key ideas, biblical outlook, 'strange but true' sidebars support the primary text. 196 pages with index & glossary, hardcover. Grade 6. 2nd Edition.