NIMS Geometry 2010 (“wiki”) – Course information for Geometry at NIMS – Rock Island/WIU – http://nimsgeometry2010.pbworks.com/.
Geogebra – a free and multi-platform dynamic mathematics software for schools that joins geometry, algebra and calculus.
- Page of notes on GeoGebra: http://geogebraatwiu.pbworks.com/ (“wiki” by Jim Olsen)
Click Here for Geoboard Dot paper and here for Isometric Dot Paper.
Area and Perimeter Applet from http://www.mste.uiuc.edu/
Virtual Geoboard (plain one) from http://matti.usu.edu/nlvm/nav/vlibrary.html
Geometric Solids from NCTM Illuminations (Note: shift-click to color faces and edges). Platonic Solid Duals – Investigate the solids and their duals.
Geodesics Domes and Spheres Page – page of links.
Beauty of Three Dimensional Polyhedra and Spatial Visualization – B3D – numerous links to three-dimensional geometry. Includes the “Truncate, Expand, Snubify” link.
Poly – really great (free) software (download and installation takes about 45 seconds!) for showing nets and polyhedra, such as the rhombicubeoctahedron.
Cut-outs, Nets – This applet folds a 2D net into a 3D object. Click and drag to manipulate the object/net.
Geometry Center – At Science U. Good stuff on tilings, symmetry, and more. Check out Kali, where you can interact with the frieze and wallpaper patterns.
Spaceship Builder – Area and perimeter game from CyberChase Games.
Point of View Game – 3D visualization game from CyberChase Games.
Polygons Around a Point – Use regular polygons to surround a point in a plane. Make designs. Record your designs. Try not to have gaps or overlaps.
Tessellate a Quadrilateral or Tessellate! (a triangle, rectangle, or hexagon) from Shodor Curriculum Materials.
Wingeom – dynamic geometry software. A free alternative to Geometer’s Sketchpad®. Click here for a 1-page handout on Wingeom (Word doc). Part of Peanut Software.