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Annenberg Foundation
Annenberg Learner: Mathematics Illuminated: Geometries Beyond Euclid
Video presentation will help you visualize non-Euclidean geometry, comparing flat space with curved space and how they affect shape. Contains a history of non-Euclidean geometry, detailed discussion of curved vs. flat surfaces, and...
Khan Academy
Khan Academy: Geometry: Euclid as the Father of Geometry
Introduction to Euclid, Euclid's Elements, and Euclidean geometry. [8:23]
Khan Academy
Khan Academy: Mobius Strips: Math Improv: Fruit by the Foot
Video exploring the concept of a Mobius strip and some of its properties using a Fruit by the Foot.