Educators are now focusing on the improvement of reasoning skills. A key to success in improving such skills will be the ability of the individual teacher to measure skills in a valid and reliable manner. This guide will help teachers acquire the needed assessment skills. Major topics include measuring thinking skills, learning to plan an…

Describes the method of having children observe videotapes of other children's mathematics activities to gain insights into the observing children's thought processes and the observed children's activities. Discusses the applications of this method as a research tool and as a probe for classroom teachers in evaluating students. (MDH)