Surveys texts used, enrollment trends, percent of time spent on student chosen topics, grades earned by students, factors involved in determining student grades, opinions of commercial tests, and percent of time spent on various class activities. (DS)

After being trained in writing acceptable laboratory reports for 10 weeks during which all reports produced were graded, ninth grade students in an elective science course were as likely to complete all future reports when they were aware that only a random quarter of the reports would be graded as when all reports continued to be assessed. (AL)

Lists and describes simple and inexpensive equipment for student use for units on electricity, mechanics, and waves and optics. (DS)

Reports study of achievement of ninth and tenth grade level students in Israel City, Kibbuts, and agricultural schools during 1966-68. Mean test scores on adopted BSCS Yellow Version topices attained by 549 BSCS students are signigicantly higher than those by 456 non-BSCS students. (JM)

Compared effectiveness of two approaches of teaching BSCS, Molecules to Man, to eighth grade students. Individualized instruction was significantly superior to group instruction in achievement, understanding of science, critical thinking ability, and attitude toward science. (DS)