A lever is a simple machine that lifts a load with less effort. The learner will draw and label the parts of a lever. Take the students outside to an area with a see-saw. The type of simple machine we will learn about today is the lever. One example of a lever that you are all familiar with is the see-saw.
Teacher gets on one end of the see-saw.
Have one student try to push the other end down and lift her up. Keep adding students. See how many students are needed and approximately how high the teacher is lifted off the ground. Move the fulcrum of the see-saw and repeat the process of adding students until the teacher is lifted. All levers have three parts.