Teacher development with Geometer's Sketchpad

Teacher development with Geometer's Sketchpad : potentials and pitfalls / Gerrit Stols, Dirk Wessels .
In: Proceedings of the 8th International Conference on Technology in Mathematics Teaching [x, 46 s. + 1 CD-ROM]. ISBN 978-80-7041-285-5 (brož.) International Conference on Technology in Mathematics Teaching. Hradec Králové : Gaudeamus, 2007. S. 35-36 .