Along with this theme a discussion of playground safety would be appropriate. Children will want to bring their own ideas to this whole project. We sincerely feel that we will be leaming from them constantly. We also think it is important to incorporate other ideas and building materials into the project along with legos. On chart paper we would help organize the information we provided to our students about energy, work, force and friction.
Every machine needs a force to make it work.
Force produces movement. A machine is made so that the right amount of force produces the right wnount of movement where needed. The seesaw is a lever, it acts as a simple machine. It has a support in the middle called thefilcrum. After drawing sketches of seesaws, invite the students to build their own seesaw with a partner, using legos.