Study focused on microteaching and the effects of this particular mode of skill training on the classroom performance of student teachers. (Author)

Some helpful ideas are proposed for use by biology teachers. Topics included are Food Webs,'' Key to Identification of Families,'' Viruses,'' Sieve Tube,'' Woodlice,'' Ecology of Oak Leaf Roller Moth,'' and Model Making.'' (PS)

The study was conducted to evaluate divergent physics laboratories in accomplishing objectives of Commission on College Physics. A questionnaire was used to collect data from students. Analysis revealed students in divergent laboratories had more opportunity to choose or design their own experiments and develop a model for data interpretation. (PS)

Describes the instructional use of a German Government produced newsreel, Deutschlandspiegel,'' at Fordham University, New York City. For information on availability of this newsreel, contact the AATG Service Center, 339 Walnut Street, Philadelphia, Pennsylvania 19106. (RS)

Describes the principles and uses of thermoluminescence technique in dating of pottery and ceramic pieces and establishing the authenticity of artifacts. (CC)

Describes a microbiological experiment designed to study the competition between two species of bacteria. Experimental procedures and data obtained in conducting this experiment are provided, together with a discussion of the results. (JR)

Describes the commercial applications of hydroponics, and then outlines ways in which this soilless plant culture method can be used in the science classroom and laboratory. Gives directions for making a suitable growth solution, and suggests appropriate student experiments involving hydroponics. (JR)