Two representations useful in teaching transmission genetics are described. Details of the representations and problem solving using these instructional aids are discussed. The importance of developing representations which help remedy specific difficulties that students commonly encounter is stressed. (CW)

Recommendations are given for obtaining high quality preparations of chromosomes with relatively little equipment using an improved Feulgen-squash technique. (Authors/SA)

This proceedings report includes papers presented at a conference on teaching science to students with disabilities. In the first paper, "Family Pedigrees: A Model Lesson Illustrating Strategies for Teaching Students with Disabilities in a Mainstreamed High School Biology Class" (Kathleen Ball and Edward C. Keller, Jr.), strategies are described…