Describes a project in which fingerprint patterns were identified and analyzed to determine whether any positive relationship existed between pattern type and academic ability. (LS)

A method is described for preparing large gelatine-embedded soil sections for ecological studies. Sampling methods reduce structural disturbance of the samples to a minimum and include freezing the samples in the field to kill soil invertebrates in their natural microhabitats. Projects are suggested for upper secondary school students. (Author/BB)

Describes an exercise in which senior high school biology students used a computer to simulate genetic mapping. The exercise was designed to enhance the students' grasp of the concepts of linkage and crossing-over. (JR)

Describes a laboratory practical on animal behavior suitable for senior secondary school or university biology classes. Several separate exercises relating to the house building behavior of caddis fly larvae are detailed, together with the time required for preparation. (JR)

Describes an approach to teaching the Hardy-Weinberg Law in high school genetics class. Instructional procedures used help in developing this concept in broad generalization form rather than merely a mathematical model of a gene pool. (PS)