1. Editorial Note

   Editorial Introduction Pages: 243 - 243

2. Learning Mathematics in a CAS Environment: The Genesis of a Reflection about Instrumentation and the Dialectics between Technical and Conceptual Work

   • Michèle Artigue

   OriginalPaper Pages: 245 - 274

3. Instrumenting Mathematical Activity: Reflections on Key Studies of the Educational Use of Computer Algebra Systems

   • Kenneth Ruthven

   OriginalPaper Pages: 275 - 291

4. Thoughts on Reading Artigue's ``Learning Mathematics in a CAS Environment''

   • Al Cuoco

   OriginalPaper Pages: 293 - 299

5. The Influence of Visual and Spatial Reasoning in Interpreting Simulated 3D Worlds

   • Tom Lowrie

   OriginalPaper Pages: 301 - 318

6. Using a Computer to Model the Electoral College

   • David Ehren
   • Jeremy Kahan

   OriginalPaper Pages: 319 - 327

7. Instructions for Authors

   Instructions for Authors Pages: 329 - 336

8. Volume Contents Volume 7

   OriginalPaper Pages: 337 - 338