Modular origami is those models assembled from multiple pre-folded pieces. Generally all or most or these pieces are the same, and fit together to form a geometric shape. This category also lists sites which connect origami to math, usually geometry.
Related categories 3
Geometry Junkyard: Origami
Resource listing of links for information about the relationship between origami and geometry.
Jim Plank's Origami: Modular
Diagrams and gallery of many geometric models.
Krystyna Burczyk's Origami
Photographs of regular polyhedra models.
Meenakshi's Modular Mania
Image Galleries of original modular models as well as picture links to other designs.
Images of modular origami models folded by Michał Kosmulski. Model categories include: fractals and IFS, interesting mathematical objects, polyhedra and balls, spiked balls and stars.
nuwen.net - Origami Polyhedra
Illustrated directions for making four types of polyhedra.
Weblog by Eric Gjerde featuring tessellations, crease patterns, tessellation geometry, origami mathematics and paper folding in general.
Teaching Mathematical Thinking Through Origami
Suggestions for using origami to teach concepts in mathematics, with diagrams of models.