Massachusetts Institute of Technology
Mit: Science Out Loud: Trippy Shapes
In school, we learn about shapes with sides and edges - but there are weird shapes out there (beyond our 3 dimensions) that defy our normal idea of geometry. QuanQuan and Jenny explain, knit, and 3D print their way through trippy shapes!...
Khan Academy
Khan Academy: Slicing a Rectangular Pyramid
Demonstrates what types of shapes one can get in a cross-section when a rectangular pyramid is sliced. [3:29]
Khan Academy
Khan Academy: Ways to Cross Section a Cube
Explores the variety of two-dimensional cross-sections that can be obtained by slicing a cube. [7:23]