Describes the development of a coding scheme that represents students' ideas and its application to the analysis of interviews with urban students (n=8). Results indicate that decomposition is a linchpin concept for building an understanding of nutrient cycling, and ideas which relate to children's natural framework theories provide a generative…

This paper documents the dynamics of the social interactions within two small groups of sixth grade students as they solved problems and attempted to understand the concepts related to the nature of matter and molecular theory. Similarities and differences of social interactions between the two groups are compared, and interpretations presented…

Describes a program designed to educate and train selected teachers to utilize hands-on activities, provide inservice workshops for their colleagues, and function as resource persons within their school districts. Discusses participant selection, workshops, and final project overview and evaluation. Concludes that the stated goals of the project…

Explores the idea that retention of particular concepts must occur before a student can transfer his learning to new situations. Investigates retention and transfer of fifth and sixth graders, in which achievement level was assessed on some advanced concepts as a function of performance on related basic concepts. (CS)

Describes a year long laboratory program for third, fourth, and fifth graders. States the goal of the program is to demonstrate what chemistry is, how it is done, and why it is fun and interesting. Provides a syllabus of the experiments and lists educational objectives. (MVL)