With a handful of index cards, a marker, and some scissors, I was able to make this fun representation of a surface in 3D!
Turn it to the side, and see the surface from a different perspective.
The inspiration was timely, as my Calculus class has been discussing cross-sections, traces, and level curves of surfaces in space. What a perfect way to demonstrate how to understand a surface by looking at representative slices!
A great, simple tool! I look forward to making this a student project.
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