1. With an eye toward the mathematical horizon;Ball;Elementary School Journal,1993
2. Teachers’ developing ideas and practices about mathematics performance assessment;Borko;Teaching and Teacher Education,1997
3. California State Department of Education (1999). Mathematics framework for California public schools: Kindergarten through grade twelve. Sacramento, CA: Author.
4. Research and cognitively guided instruction;Carpenter,1991
5. Teachers’ thought processes;Clark,1986