### Dynamic Visualization Resources

http://www.cs.appstate.edu/~sjg/talks/sketchpad/refs.html
The address of this handout with working links.

Geometric
Constructions

http://www.mathsnet.net/articles/gsp4.html MathsNet: Review of
Geometer's Sketchpad 4

http://www.keypress.com/catalog/products/software/Prod_GSPModules.html
http://www.xahlee.org/PageTwo_dir/MathPrograms_dir/mathPrograms.html#Content
This is a list of math related programs. Most programs listed are shareware or freeware.

http://aleph0.clarku.edu/~djoyce/java/elements/toc.html
The complete text of Euclid's Elements Books I - XIII with
interactive java Geometry Applets and commentary.

http://home.a-city.de/walter.fendt/me/sphertriangle.htm
The sum of the angles in a spherical triangle.

The following are Sketchpad 3 activities.
With slight modifications, they can still be used
in Sketchpad 4. As far as I can tell from
searching, because the software is so new,
there are very few resources (except for those
mentioned above) that make full use of
Sketchpad 4.

http://www.keypress.com/sketchpad/sketchlinks.html Keypress Sketchpad
Links

http://mathforum.org/sketchpad/sketchpad.html The Geometer's Sketchpad
Math Forum Classroom Resources

http://www.yrbe.edu.on.ca/~cecw/docs/software/guides/GEOACT.PDF
Geometry Activities for Middle School Students with The Geometer's Sketchpad.
The text and cd can be purchased at http://www.keypress.com/sketchpad.
They are still working on upgrading this text to Sketchpad 4.

http://mathforum.org/sketchpad/littleones/ Sketchpad for Little Ones

http://www.occdsb.on.ca/~tec/gsp.pdf
A Collection of Useful Information for Teachers Wanting to Learn Geometer's
Sketchpad. Includes suggestions for assessment.

http://mathforum.org/~annie/gsp.handouts/
Annie's Sketchpad Activities