Lesson COG 25
Task: Match by size.
Prerequisites: ADT 1, ADT 5, ADT 6, COG 6, SEN 11—SEN 113
Concept: Size is one of the more abstract concepts to be taught because the concepts can be relative, based on the student, experience or the items being presented. In this exercise, only three size concepts are taught: small, medium, and large.
Behavioral objective: When presented with three different size samples of model¬ing clay (small, medium, and large), the student will place a sample of similar size next to each presented sample to a 9096 accuracy level for 20 trials.
Materials: Modeling clay or similar materials. (Nate. Use of nontoxic materials is strongly encouraged.)