Summary Use the weight of water to raise marbles, using simple machine mechanisms: a wheel and axle, a lever and a pulley. Science content Physics: Motion and Forces, Newton’s Laws, Gravity (K, 2, 6) Physics: Simple and complex Machines (5) Activities in this lesson Water wheel Pulley free play Lever for lifting (heavy) things Procedure Set up the three activities for students to rotate through. It will be messy, so have lots of towels and a mop handy. Gather to discuss challenges, ways they were worked around, and the forces in the simple machines. Grades taught Gr K Gr 2 Gr 3 Gr 4 Gr 5
