Simple Machines Gr. 5-8

Just how simple are simple machines? Our resource makes these machines simple to teach and easy to learn. Understand that work is when a thing moves in the direction that a force is acting on it. Conduct an experiment with first-class levers to study distance and force. Explain how a wheel and axle can be used as a lever. Identify the three different kinds of pulleys. Find the resistance force whe...