The Rice University Mathematics Leadership Institute and School Mathematics Project were fortunate to have visits from Ton Lecluse in 2005 and 2007. Mr. Lecluse is the author of Geocadabra, an interactive software that encourages geometric exploration.
Ton Lecluse's Geocadabra software is available online. In addition, PDF files with the activities we did while he was here and support documentation are available below.In the Fall of 2007 we began a user's group (hosted by Google), an online community created in order for those who are using or trying out Geocadabra to communicate with one another about cool things they've done, questions about how to do something, lessons that incorporate Geocadabra, or any other Geocadabra-related topic. If you haven't done so yet, download the software and join the user's group!
Below are Quicktime videos that show how to use Geocadabra's construction box and extended construction box. If you are having trouble seeing the videos, you may need to download Quicktime (it's free).
Below are PDF versions of the documenation for Ton Lecluse's Geocadabra software. Visit the Geocadabra website for more documentation.
The User Interface
Building with Blocks
Draw a Graph in Four Steps
Making a Net of a 3-D Object
The Volume of a Dodecahedron
The Tetrahedron Puzzle
Create a Probability Tree
The Rhombic Dodecahedron
The Gothic Window
Do You Recognize Cyclic Quadrilaterals?
Divide the Tetrahedron in two and four equal pieces
Build and Explore with Geocadabra Manual written by Retha Van Niekerk and translated by Jackie Sack
The Extended Construction Box