Explored were classification criteria selected by primary children in free classification situations as a function of grade levels, socioeconomic background, and some characteristics of the classification tasks. Conclusions indicate a strong preference to classify items by their form. Student differences in free and guided classifications are…

Treatment and control groups were used to test the effectiveness of a written instructional program in basic and integrated process skills. Findings revealed that the treatment group achieved higher than the control group on six of eight process measures following the experiment. In addition, subjects from the treatment group asked fewer closed…

Studies elementary school childrens' abilities in (1) measuring and constructing angles, and (2) interpreting and constructing linear graphs as a result of instructional formats. Partitioned into instructional treatments of (1) science, (2) science-mathematics, (3) mathematics, and (4) control were 161 fourth- and fifth-grade children. Mathematics…

Reports the results of an in-depth examination of middle school children's graphing skills and misconceptions. Also discusses a study in which students learned graphing skills through microcomputer-based laboratory (MBL). (ML)

Determined effectiveness of inquiry approach to science and language teaching to further develop classification and oral communication skills of bilingual Mexican American third grade students (N=64). Results indicate that participation in science inquiry lessons facilitated development of both classification and oral communication skills. (JN)

Describes an analysis of test items used to measure the science process skills of 11-year-olds in Great Britain. Concludes that the level of cognitive demand was a reliable predictor of the difficulty of an item. (TW)