Although basing instruction on learning trajectories (LTs) is often recommended, there is little direct evidence regarding the premise of a LT approach--that instruction should be presented (only) one LT level beyond a child's present level. We evaluated this hypothesis in the domain of early shape composition. One group of preschoolers, who were…

Although basing instruction on learning trajectories (LTs) is often recommended, there is little direct evidence regarding the premise of an LT approach--that instruction should be presented (only) one LT level beyond a child's present level. We evaluated this hypothesis in the domain of early shape composition. One group of preschoolers, who were…

A study was made of the effect of various learner and task characteristics on learning from scrambled frames in an instructional program. The independent variables were: sequence (scrambled vs. logical), grade, sequence length, criterion test complexity, sex, IQ, mathematics achievement, and reading comprehension. The dependent variables were:…