1. Growing tall

   • David Kent
   • Keith Hedger

   OriginalPaper Pages: 137 - 179

2. A potential for learning probability in young children

   • Ruma Falk
   • Raphael Falk
   • Iris Levin

   OriginalPaper Pages: 181 - 204

3. Three-dimensional geometrical drawing in three cultures

   • Michael C. Mitchelmor

   OriginalPaper Pages: 205 - 216

4. The development of proportional reasoning and the ratio concept Part I — Differentiation of stages

   • Gerald Noelting

   OriginalPaper Pages: 217 - 253

5. Announcements

   Announcement Pages: 255 - 256