The use of dynamic geometry software (DGS) is becoming increasingly familiar among teachers, but letting students conduct inquiries using computers is still not a welcome idea. In addition to logistics and discipline concerns, many teachers believe that mathematics at the lower secondary level can be learned efficiently through practice alone.…

Reports on procedural and conceptual knowledge for solving a basic quantitative problem in chemistry by expert and novice secondary school students. Concludes that the major differences between experts and novices lay in conceptual understanding, use of a qualitative procedure, and the type of strategy used. Suggests some instructional techniques…