- Libro electrónicoMath Games & Activities from Around the WorldClaudia Zaslavsky
- Libro electrónicoNumber Sense and NonsenseClaudia Zaslavsky
- Libro electrónicoMore Math Games & Activities from Around the WorldClaudia Zaslavsky
- Libro electrónicoAfrica CountsClaudia Zaslavsky
- Libro electrónicoNumber Sense and NonsenseClaudia Zaslavsky