A hierarchy for learning to solve different types of addition with fractions problems was hypothesized on the basis of both content analysis and psychological considerations. Problem types were defined according to the relationship of the two denominators to each other (e.g., equal, prime, etc.) Students in grades 4 through 8 were each given 45…

The sequences of learning sets (intersequence) and instructional events (intrasequence) were empirically validated for a hierarchy of concept and rule using skills. Experiments with high school students showed no differences between empirical and reordered inter- or intrasequence on time to mastery; nor was there a difference in the number of…

This paper provides guidelines for the use of videotape recordings for systematic instruction in functional skills for students with moderate to severe disabilities. Four examples illustrate use of videotapes to teach community skills (e.g., crossing a street) to secondary students with moderate disabilities; self care skills (e.g., zipping a…