Filled with high interest exercises, this Grade 5 Unit 8workbook focuses on features of the earth: rock, forces, changes. Lifepac science curriculum brings the physical world of God's creation into focus. Students conduct experiments to reinforce scientific concepts, such as records in rock: geology. Perfect for students who flourish in a self-paced, individualized learning format, each consumable Lifepac combines lessons, exercises, projects, reviews, and tests. Paperback.