Learning progressions (LPs) describe the development of domain-specific knowledge, skills, and understanding. Each level of an LP characterizes a phase of student thinking en route to a target performance. The rationale behind LP development is to provide road maps that can be used to guide student thinking from one level to the next. The validity…

TWO STRATEGIES FOR TEACHING MULTIPLE-DISCRIMINATION TASKS WERE REPORTED. THE "MULTIPLE CONCEPT" PRESENTS SIMPLE DESCRIPTIONS OF SEVERAL RELATED CONCEPTS AT THE BEGINNING OF INSTRUCTION. INCREASINGLY COMPLEX MATERIAL PERTAINING TO THESE CONCEPTS IS THEN GRADUALLY INTRODUCED. THE "SINGLE CONCEPT" PRESENTS ONE CONCEPT AT A TIME,…

THE PROBLEM OF THIS RESEARCH WAS TO STUDY THE EXTENT TO WHICH STUDENTS ARE ABLE TO GENERALIZE WHAT THEY LEARN IN ONE LESSON SO THAT THEY ACTUALLY GAIN COMMAND OF ABILITIES NOT SPECIFICALLY TAUGHT UNTIL SOME LATER LESSON. THE AUTHOR EXAMINED CONDITIONS UNDER WHICH A MASTERY SCORE ON A PRETEST IN ARITHMETIC COULD BE CONSIDERED A TRANSFER INSTANCE.…