CK-12 Foundation
Ck 12: Interactive Geometry: 9.4 Connections Between Two and Three Dimensions
Cross-sections are one way that two-dimensional objects are connected to three-dimensional objects.
CK-12 Foundation
Ck 12: Interactive Geometry: 1.12 Cross Sections of Solids
See how the cross-sections of solids relate to their shapes.
PBS
Pbs Learning Media: Cross Sections of a Cube
This interactive exercise focuses on discovering the relationships between two and three-dimensional shapes.
Quia
Ixl Learning: Cross Sections
Brush up on your math skills relating to cross-sections then try some practice problems to test your understanding.
University of Colorado
University of Colorado: Physics 2000: Cat Scans
A CAT Scan is compared to cutting up a fruitcake on this basic, yet interesting site. This description of CAT Scans is intended for a younger audience and also offers links to the visible human project.