Reports an experimental study of 80 ninth grade biology students randomly assigned to treatment and control groups to determine whether the use of human examples in instructional strategies on Mendelian genetics increases acquisition and retention of genetics concepts. Results indicate that use of human examples in contrast to traditional examples…

Inservice teachers (n=180) participating in seven mathematical problem-solving workshops were asked to define problem solving. An item analysis of the written responses indicated that 67% of the responses were conceptually or terminologically vague. Precise definitions fell into three categories: strategy-based (12%), skills-based (9%), and…

Presents a study to examine the effects of a verbal teaching strategy versus a strategy providing instruction using activities and manipulatives in four seventh grade earth science classes with students of varying cognitive abilities (n=83). Results indicate that students with more cognitive structures perform better and that using manipulatives…