Students determine the M.A. of levers. Students predict mass necessary to balance levers. Students predicet where a 100g weight should be placed to balance a lever. Arm 23 Spring Calibration 1. Students determine the stretch of a spring vs. weight.
Students determine stretch of spring with an unknown object.
Students make a graph, interpolate the weight of unknown object. The Measurement of Speed 1. Students determine their own speed over a 50 m course. 25 Buoyancy 1. Students make a boat from plasticine clay, then determine how many pennies the boat will hold before it sinks.