Filled with high interest exercises, this Grade 4 Unit 3workbook focuses on resources, balance in nature, communities, conservation and preservation. Lifepac science curriculum brings the physical world of God's creation into focus. Students conduct experiments to reinforce scientific concepts, such as man's environment. Perfect for students who flourish in a self-paced, individualized learning format, each consumable Lifepac combines lessons, exercises, projects, reviews, and tests. Paperback.