Describes simple apparatus and procedures for demonstrating photosynthic rates when Elodea plants are illuminated simultaneous with long and short wavelength light. (AL)

Reviews use of individual learning techniques in adaptation of Nuffield Biology. Concludes that is is a valuable way of dealing with many, but not all, topics, and that it should be seen as a valuable alternative to be used at the teacher's discretion. (AL)

Reviews literature on effectiveness of educational television (ETV) and reports trends in ETV utilization by Victorian secondary school science teachers. Discusses potential improvements in ETV utilization using electronic video recording devices, feedback to the television teachers, and identification of effective ETV techniques. (AL)

Describes experiment with seventh-grade students comparing achievement of experimental groups using Idea-Centered Laboratory Science project materials with control students using standard course. Concludes that experimental groups gained significantly more in science reasoning and understanding. (PR)

Presents the procedures, results, and conclusions of a study designed to assess the impact of the incorporation of set-induction procedures in teacher's instructional strategies upon pupil achievement, retention, and assessment of effective teaching. The study involved student teachers and ninth grade biology pupils. Used was the pretest-posttest…