Barbara Henderson

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Recent Reviews by Barbara

Sat Mar 13, 2010 6:38 PM
5 Newton's Third Law
Well maybe I didn't know all I should have known about Newton's Third Law. The idea that equal forces were being exerted simultaneously was not as enforced to my students and it should have been. Also the idea of pressing your finger, and the table edge to demonstrate that objects push back is one I will use from now on. It is wonderful to have these visual demonstrations so my students can see and experience the "Laws" firsthand.

Sat Mar 13, 2010 6:01 PM
5 Newton's Second Law
I always felt that Newton's Second Law was hard for elementary students to understand, probably because I didn't seem to understand it as well as Laws 1 and 3. This tutorial has changed my mind, the Rocketship simulation is perfect. The balloons and washers is also very understandable. I was also under the misconception that Force was being transferred from one object to the next and this tutorial has shown me that tis is a misconception. I learned a lot from this tutorial and I found the math very understandable also.

Sat Mar 13, 2010 5:06 PM
4 Newton's First Law
I've always had a pretty good grasp of Newton's First Law, but the concept of "inertia" has never been clear. This aritcle made it clear. I have also been at a loss to demonstrate the application of friction to my classes, but that interactive activity allowing you to add or change the amount of friction would work well.