This lesson plan outlines a 45-minute physics lesson for 8th grade students on the concept of force. The teacher will begin by posing a puzzle question to inspire learning. Students will then work in groups on activities and discussions applying the concept of force to examples like rolling a ball and pushing a door. They will also complete a worksheet and watch a video with more examples. The teacher will explain that force changes the state of rest or motion of an object, with the unit being Newton. By the end of the lesson, students should be able to define force, explain examples of it, and realize its importance. They will also be assigned extended activities involving classifying forces as push or pull in diagrams.