This week, may partner and I worked on building an elbow out of household items. In our final design, we found it difficult to prevent the model from extending past 180 degrees.
After constructing our own elbow, I found this worksheet online: http://wonderstruck.co.uk/files/Student-Resource-Sheet-1.1-Build-Your-Own-Elbow-Joint.pdf
This would be such a cool idea for an in-the-classroom experience. It touches on various STEM ideas, including anatomy and engineering.
This is a physical model, as described in Developing Model-Based Reasoning in Mathematics and Science by Richard Lehrer and Leona Schauble. They attempt to draw connections between the world of the model and the actual world.
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