Filled with high-interest exercises, this Grade 9 workbook set covers the concept of our atomic world, volume, mass and density , as well as physical geology, historical geology and astronomy . Lifepac science curriculum brings the physical world of God's creation into focus. Students conduct experiments to reinforce scientific concepts, as they explorebody health, scientific applications and oceanography . Perfect for students who flourish in a self-paced, individualized learning format, each consumable Lifepac combines lessons, exercises, projects, reviews, and tests. 10 Lifepacs included. The Teacher's Guide must be purchased separately. Grade 9 .