Filled with high interest exercises, this Grade 6 Unit 7workbook focuses on definition of force, rate of doing work, laws of motion, change in motion. Lifepac science curriculum brings the physical world of God's creation into focus. Students conduct experiments to reinforce scientific concepts, such as motion and its measurement. Perfect for students who flourish in a self-paced, individualized learning format, each consumable Lifepac combines lessons, exercises, projects, reviews, and tests. Paperback.