Two computer-based instructional design strategies were investigated to improve the two-phase process of concept learning by being response sensitive to error patterns. The first strategy determined the format of examples by adaptive or fixed selection; the second strategy adjusted the selection according to rules of generalization and…

Used 2 12-year-old children to investigate deductive and inductive reasoning in plane geometry. A LOGO microworld was programmed to measure distances and turns relative to points on the plane. Learning environments like this may enhance formation of inductive geometrical understandings. (Contains 44 references.) (LDR)