Handouts that incorporate Java Sketchpad are indicated with a . Why should you care about Java GSP? Two main reasons, as I see it. One, you can prepare sketches for your students to explore where all they can see is what you want them to see. They can't "show all hidden" to find the answers to anything, and they can't construct anything new. Two, a handout on paper is static. The student can see if their picture looks right, but they can't tell if it acts right. By using a web page that incorporates java versions of the sketches, they can drag the sketch on the page as well as their sketch to see if they act the same. There are some examples available at the bottom of the page.
Note: These activities have not been updated for version 4 of Sketchpad. (Most are still relevant and possibly even useful.) Hopefully I can find time to do that this summer. Feb 2003.
Learning More About Sketchpad  
Learn how to reproduce a presentation sketch that uses a lot of action buttons.

Learn how to construct a sketch with which students can investigate the properties of different quadrilaterals.

Learn to construct script tools to investigate the Euler segment.

Learn how to incorporate sketches into your web pages. You can look at some examples to get some ideas, too. 
Doing Math With Sketchpad  
Take a polygon and "morph" it into a circle.

Explore the centers of the equilateral triangles constructed on the sides of any triangle and related lines and points.

Construct the net of a box and its threedimensional representation, both linked so that changing the side of the net changes the picture of the box.


Construct a parabola by paperfolding, modeling the paper folding in Sketchpad, and then analytically.


Java Sketchpad Examples  
The following Geometry Problems of the Week from the Math Forum use sketches to illustrate ideas that the students often had problems with or that were just ultracool.
Find the third vertex of a triangle on the coordinate plane if two of the vertices are (6,0) and (10,0) and the area is 24 units^{2}. Two 10" squares overlap. The corner of one is anchored at the center of the other. What's the area of the region where they overlap? Draw parallelogram ABCD with AB=10. Draw EF with E between A and B and F between C and D such that EF divides the area of ABCD in half. If EF=4, what is FD? Prove that two congruent chords in a circle are equal distances from the center of the circle. 