The first simple machine is a lever. A hammer is acting like a lever by pulling the nail out of the wood. The load is the nail the folcrum is the wood the effort is the hammer.

The next is a pulley. The pulley helps you carry things up or down easier. the effort is the rope being pulled and the load is the object being pulled. The fulcrum is the center of the thing that turns.

The next one is the Wheel and Axel. The effort is the wheel and the axel is the the folcrum. The wheel helps you turn things.