共 31 条
- [21] Roth W. M., 1993, SCH SCI MATH, V93, P113
- [25] SCARBOROUGH J, 1993, TECHNOLOGY TEACHER, V52, P26
- [26] Siskin LS, 1994, REALMS KNOWLEDGE ACA
- [27] TIROSH D, 1992, SCH SCI MATH, V92, P353
- [28] UNDERHILL R, 1995, SCH SCI MATH, V5, P225
- [30] Yager R. E., 1994, SCH SCI MATH, V94, P338