http://store.aimsedu.org/aims_store/books/paper-square-geometry-the-mathemati...
From the DVD that accompanies the AIMS Book " Paper Square Geometry"
By assembling 3-dimensional origami models from 2-dimensional units, students experience geometry in a meaningful context and increase their understanding of symmetry, angle, congruence, and similarity. Includes 30 six-inch squares of paper in assorted colors.
nice video
OograemeoO 3 years ago