Three experiments investigated the ability of 79 college students to solve similar algebra word problems. Data indicate that students are able to perceive and use similarities in such problems at the level of a conceptual structure. A training session to explain relevant structural principles was effective in improving performance. (SLD)

This study investigated whether good novice problem solvers have their knowledge arranged around problem types to a greater extent than poor problem solvers have. Twelve problem types (see appendix) were distinguished according to underlying physics principles and 65 knowledge elements were printed on cards for university students to sort.…

This article examines naive conceptions of spatial reference that children bring to Logo programing language learning. Students from Grades 4, 5, 6, and 8 were introduced to six Logo commands, and then were tested on predicting the output for instances of each of the commands. (Author/LMO)