Examines the nature of selected traditional cosmological concepts among literate and nonliterate Nigerians. Findings indicate that the respondents, regardless of their status, hold both scientific and traditional notions of the universe. A preference for a scientific world view was evidenced by those who experienced a history/philosophy of science…

Reports on specific problem-solving difficulties of 240 chemistry teachers from 5 Nigerian states who volunteered to take part in 3 written tests and an interview. Describes the contrasts between successful and unsuccessful problem solvers, and discusses the pedagogical and psychological implications of the findings. (16 references) (JJK)

In considering implications for teaching and learning found in research, a number of writers have urged teachers to probe students conceptions before teaching a concept. The purpose of this probing is to allow the teacher to begin instruction from the conceptual position or positions of the students. This approach carries with it the assumption…