I was recently inspired to make my first sliceform.
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, and you can see some examples of the sliceforms my students created, like the one seen below, here.