Williams 
Science Experiments, Grades 5 — 8 [PDF ebook] 
EARTH Science

With this comprehensive classroom supplement, students learn to focus on the scientific method and developing hypotheses. Topics covered include geology, oceanography, meteorology, astronomy, investigations into water salinity, radiation, planets, and more! A variety of experiment models are also included for further concept reinforcement. Mark Twain Media Publishing Company specializes in providing captivating, supplemental books and decorative resources to complement middle- and upper-grade classrooms. Designed by leading educators, the product line covers a range of subjects including mathematics, sciences, language arts, social studies, history, government, fine arts, and character. Mark Twain Media also provides innovative classroom solutions for bulletin boards and interactive whiteboards. Since 1977, Mark Twain Media has remained a reliable source for a wide variety of engaging classroom resources.