1. Subtracting fractions with different denominators

   • Leen Streefland

   OriginalPaper Pages: 233 - 255

2. Curriculum variables, theory and goals: A comment on Begle's Critical Variables in Mathematics Education

   • Christine Keitel

   OriginalPaper Pages: 257 - 267

3. Learning mathematics in a second language: A problem with more and less

   • Peter L. Jones

   OriginalPaper Pages: 269 - 287

4. Les premieres acquisitions de la notion de fonction lineaire chez l'enfant de 7 A 11 ans

   • Graciela Bicco

   OriginalPaper Pages: 289 - 327

5. Piagetian tasks as readiness measures in mathematics instruction: A critical review

   • James Hiebert
   • Thomas P. Carpenter

   ReviewPaper Pages: 329 - 345

6. Book review

   • Dieter Lunkenbein

   BookReview Pages: 347 - 348