1. Editorial

   • Helen Forgasz

   EditorialNotes Pages: 1 - 2

2. Primary preservice teachers’ understandings of volume: The impact of course and practicum experiences

   • Robyn Zevenbergen

   OriginalPaper Pages: 3 - 23

3. Cognition and Instruction: Reasoning about bias in sampling

   • Jane Watson
   • Ben Kelly

   OriginalPaper Pages: 24 - 57

4. Young children’s ability to use the balance strategy to solve for unknowns

   • Elizabeth Warren
   • Tom J. Cooper

   OriginalPaper Pages: 58 - 72

5. A study of kindergarten children’s spatial representation in a mapping project

   • Genevieve A. Davis
   • Eunsook Hyun

   OriginalPaper Pages: 73 - 100

6. Lines of flight in mathematics education and research

   • Mary Klein

   Book Review Pages: 101 - 106

7. MERGA: The four year review

   • Ken Milton

   Book Review Pages: 107 - 109