Wow! It's been a very busy time!
After introducing the scientists on the island, we investigated inclined planes/ramps. First, we worked with rolling small cars down the ramps, mostly for the purpose of setting up an investigation, writing the procedure, collecting data in a data table, and graphing our results.
We also pretended to drag the scientists' crate up an inclined plane, measuring the force necessary for different heights and lengths. Force is measured in Newtons, so we learned how to work a spring scale, which measures Newtons.
These are spring scales. We've been using the red type, which measures up to 10 Newtons. To use it, one hooks the mass that needs to be lifted/pulled and pulls GENTLY on the handle on the other side. As the mass moves, a partner keeps an eye on the plunger inside. It should hover around the number of Newtons required to move that force.
More later about our work with LEVERS and PULLEYS, as well as BAR GRAPHS.
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