1. Didactical Complexity of Computational Environments for the Learning of Mathematics

   • Rosamund Sutherland
   • Nicolas Balacheff

   OriginalPaper Pages: 1 - 26

2. Using Web-based Materials in Large-scale Precalculus Instruction

   • David Slavit
   • Joshua Yeidel

   OriginalPaper Pages: 27 - 50

3. Complex calculators in the classroom: theoretical and practical reflections on teaching pre-calculus

   • Jean-Baptiste Lagrange

   OriginalPaper Pages: 51 - 81

4. Squirals and Volutes in Logo and J

   • Howard A. Peelle

   OriginalPaper Pages: 83 - 93