Changes of buoyancy related to temperature of an aluminum block system in water are investigated. Three hypotheses to explain the observed change are developed and tested, and the intellectual processes used in the various steps are noted. (CP)

Students drew mitotic stages under directions asking for the most accurate representation possible or under conditions requiring analysis and annotation. Lower academic ability students benefited most from the analytic technique. (AL)

Describes an earth science project completed by students in an American school in Saudi Arabia. (AL)

Describes analyses suitable for chemistry students studying polluted streams. Provides representative data, and suggests further exercises for interdisciplinary study. (AL)

Summarizes data from a Likert-type scale given to students of Nuffield and traditional science programs in England in 1966. Scientific interests and attitudes were more positive for the Nuffield group, non-scientific interests favored the traditional. (AL)