Described is the use of two models of pocket calculators. The Hewlett-Packard HP67 and the Texas Instruments TI59, to solve problems arising in connection with ionic equilibria in solution. A three-parameter regression program is described and listed as a specific example, the hydrolysis of hexavalent uranium, is provided. (BT)

Discusses the use of pocket calculators for the computation of a line by the least-square-fitting method. The method is exemplified with a classical student experiment. (HM)

Indicates that measures of reflective reasoning skill are significantly related to initial scientific beliefs about evolution, as well as to gains in declarative knowledge about evolution; however, the same measures are not significantly related to changes in those beliefs. Interrelationships among the study's major variables and their educational…

A major concern of science educators is the lack of talented females selecting science careers. In spite of attempts during the past few decades to create equality in all facets of life in the United States, many sexual stereotypes persist. The research presented here is designed to examine the relationship of sex to the relevant factors…

This report examines the effects of both student and school characteristics on mathematics and science achievement levels in the third, seventh, and eleventh grades using data from the 1985-86 National Assessment of Educational Progress (NAEP). Analyses feature hierarchical linear models (HLM), a regression-like statistical technique that…