1. Mathematics: Application and connections;Balch,1995
2. How and when should place-value concepts and skills be taught?;Baroody;Journal for Research in Mathematics Education,1990
3. Some findings of the U.S.-Japan cross-cultural research on students’ problem-solving behaviors;Becker,1999
4. Developmental psychology: Achievements and prospects,1999
5. Exploring mathematics;Bolster,1995