*Physics 11* – Today the students wrote up their results from their lab for Newton’s 2nd Law. Many groups were getting close to developing a model for Newton’s 2nd Law: *Fnet = ma*. Since the input for the lab was a force though, the students graphed *a = Fnet/m*

Once the slope was written as a fraction, the students were able to recognize that it was the inverse of the mass.

I have two classes of physics 11. During the first class, I walked along a lot and spoke with students as they worked. As a result, by the time we got to share the whiteboards, almost everyone had the same board. For example, I challenged groups to find better symbols to use, rather than x and y. The second class I helped a lot less and the following discussion was better.

After our discussion, the students applied their new model to the situation of someone standing on a scale inside an elevator. This allowed for some thoughtful thinking on adding forces together from well drawn force diagrams.

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