This Collection is an open invitation to collaborate with you, fellow GGB user.
I check mail infrequently. Leave a comment here, a project idea, a request, a challenge....
If I leave a challenge for you, I will always offer at least a partial solution. It is not my goal to stump you or be stumped, but to make better worksheets, and improve GGB.
*Link to leave me a comment or challenge: http://www.geogebratube.org/material/show/id/91343