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CrossRef
Yang, D.C. (2003). Teaching and learning number sense – an intervention study of fifth grade students in Taiwan. *International Journal of Science and Mathematics Education, 1*(1), 115–134 (NSC 90-2521-S-415-001).

Yang, D.C. & Reys, R.E. (2001a). Developing number sense. *Mathematics Teaching, 176*, 39–41 (NSC 89-2511-S-415-001).

Yang, D.C. & Reys, R.E. (2001b). One fraction problem: Many solution paths. *Mathematics Teaching in the Middle School, 7*(3), 164–166 (NSC 89-2511-S-415-001).

Yang, D.C. & Reys, R.E. (2002). Fractional number sense strategies possessed by sixth grade students in Taiwan. *Hiroshima Journal of Mathematics Education, 10*(December), 53–70.