Net Force, Balance Force(s), Unbalance Force(s) and Force Diagrams Activities. Students will calculate the net force using force diagrams and identify direction and balance and unbalance force. Instructional Strategies: Review Worksheet, Reinforcement, Quiz, Bellringer/Starter, Exit Slip Closure Activity, Handout, Newton's Three Laws of Motion Worksheet How do I use this in Class: Students complete the worksheet in pairs. YOU MIGHT LIKE MY FREE PRODUCT on BALANCE AND UNBALANCE FORCES.