- Lamon, S. J. (1999). Teaching fractions and ratios for understanding: Essential content knowledge and instructional strategies for teachers. Mahwah, NJ: Lawrence Erlbaum Associates.
- Sowder, J. T. & Schappelle, B. P. (Eds.). (1995). Providing a foundation for teaching
mathematics in the middle grades. New York, NY: SUNY Press.
- Capenter, T. P., Fennema, E., & Romberg, T. A. (Eds.). (1993). Rational numbers: An
integration of research. Hillsdale, NJ: Lawrence Erlbaum Associates.
- Hunting, R. P. & Davis, G. (Eds.). (1991). Early fraction learning. New York, NY:
Springer-Verlag.
- Streefland, L. (1991). Fractions in realistic mathematics education: A paradigm
of developing research. Dordrecht: Kluwer Academic Publishers.
Book List Index:[Japanese][English]