Science should provide students an accurate and contemporary education on genetic influence, particularly how it impacts trait variability and developmental norms. Stories involving familial, racial, and sexual differences routinely appear in the popular media and sales of over-the-counter genetic tests are mounting. Unfortunately, research…

We describe efforts toward the development of a hypothetical learning progression (HLP) for the growth of grade 7-14 students' models of the structure, behavior and properties of matter, as it relates to nanoscale science and engineering (NSE). This multi-dimensional HLP, based on empirical research and standards documents, describes how students…

Achievement scores of student teachers in the areas of science, humanities, and social studies on tests of five process skills are compared. Fifty-four subjects were assigned to treatment (auto-tutorial) and control (lecture-discussion) groups. Subjects experiencing auto-tutorial instruction were found to achieve significantly higher than those in…

This study employed hierarchical linear models (HLM) to investigate Peer-Led Guided Inquiry (PLGI), a teaching practice combining cooperative learning and inquiry and tailored for a large class. Ultimately, the study provided an example of the effective introduction of a reform pedagogical approach in a large class setting. In the narrative, the…

Presented is a study in which students' intellectual reasoning development was evaluated following instruction that emphasized formal operations in a traditional lecture format. Results indicated that formal-operational students had significantly more success in the three reasoning areas than transitional students and transitional students had…

Seventy-six undergraduate students in an introductory science methods class for prospective teachers were randomly assigned to either a student directed or an instructor directed section. Using analysis of variance, it appeared that neither approach had an overall advantage in the attainment of course objectives, although interaction patterns…

Investigates the effects of a humanistic teaching-learning environment on the attitudes of preservice teachers and attempts to determine whether activities designed to clarify attitudes are useful in improving attitudes toward science. Participants in the study were 134 preservice teachers. Findings revealed that the humanistic environment was…

Compares changes in attitudes toward science and open-mindedness in treatment and nontreatment groups of preservice elementary teachers enrolled in an inquiry-oriented methods course and an expository freshman physics course, respectively. Concludes that course design effects a difference in attitude and open-mindedness. (CS)

Investigated is the effect of organization and accuracy of detail in instructional aids on the achievement of college students (N=54) in a freshman chemistry lecture course. It is indicated that aids may impede learning by decreasing students' involvement in auditory and semantic encoding during lectures. (Author/DS)

The use of hands-on and of nonmanipulative training in process skills are compared to determine the effects on preservice teachers' knowledge of process skills, understanding of science, and attitudes toward science, science teaching and method of instruction. The results show a need for training teachers in process skills using an individualized…

Presents a diagnostic test to assess students' understanding of natural selection. Field-tests the Conceptual Inventory of Natural Selection (CINS) with nonmajors and biology majors at community colleges. Compares test scores of nonmajors with performances in interviews and discusses the correlation between the test scores and the interview…

A Prelaboratory Preparation Period (PPL) was developed to introduce freshmen level students to weekly laboratories. Results (based on data obtained from 233 chemistry students) show that the PPL increased the academic achievement of students enrolled in the introductory chemistry course. (JN)

Reports on a study intended to compare the effects of two methods of instruction designed to teach preservice elementary teachers to acquire and retain integrated science process skills. Results indicated that the self-instructional method was significantly more effective than the teacher-directed method. (TW)

This study addresses the need for research in three areas: (1) teachers' understandings of scientific inquiry; (2) conceptual understandings of evolutionary processes; and (3) technology-enhanced instruction using an inquiry approach. The purpose of this study was to determine in what ways "The Galapagos Finches" software-based materials created a…