Discusses the Piagetian stages of cognitive development and their significance to the science curriculum. Refers to research that indicates that a number of concepts incorporated into the Nuffield O-level physics and chemistry curricula come too early in the courses, before many students have developed sufficiently to deal with them. (JR)

Analysis of difference in learning when students choose their own partners or randomly assigned pairs in a high school chemistry program. (HB)

Ten laboratory exercises on optics are described to clarify concepts involving point objects and converging lenses producing real images. Mathematical treatment is kept to a minimum to stress concepts involved. (PS)

Describes an attempt by chemistry teachers in an inner city high school to improve poor student achievement by concentrating on basic mathematic skills needed for chemistry calculation success. Test results indicated an improvement on questions requiring basic mathematics skills, but diminishing success in items relating to chemistry concepts and…

Reports the results of a study in England and Wales relating to the attitudes of third year secondary school children toward science and scientists. Students expressed a generally favorable impression of scientists and their work, however, boys' attitudes toward science at school were more positive than the attitudes of girls. (JR)

Discusses five experimental methods used by senior high school students to provide an accurate calibration curve of magnet current against the magnetic flux density produced by an electromagnet. Compares the relative merits of the five methods, both as measurements and from an educational viewpoint. (JR)

Discusses the advantages of using flow diagrams as a teaching technique in science. Several flow diagrams relating to topics in biology are provided as illustrations. (JR)

Briefly outlines the theoretical basis of the phenomenon of photoconductivity and describes a simple experiment which demonstrates the photoconductive properties of cadmium sulfide. (JR)