College science courses pose complex challenges to students. Textbooks are dense and laden with textbook features that may be confusing to students unfamiliar with science texts. Courses are especially challenging because they presuppose a certain degree of disciplinary literacy, or understanding of the knowledge and practices possessed by those…

The results of an earlier four-year longitudinal research study on the development of experimental design skills led to the conclusion that 12-13 year old students probably need more help to design experiments than had been offered to them in that project. This paper reports the findings of the first year of a further four-year empirical research…

To learn content knowledge in science, technology, engineering, and math domains, students need to make connections among visual representations. This article considers two kinds of connection-making skills: (1) "sense-making skills" that allow students to verbally explain mappings among representations and (2) "perceptual…

Learning chemistry vocabulary that has both scientific and everyday meanings, which we call dual meaning vocabulary (DMV), can be challenging for many students. This qualitative study investigated how college students understand 11 selected DMV words before and after traditional chemistry instruction and to what extent they retain the scientific…

Describes the development and evaluation of a placement test used as a major determinant of eligibility to enroll in first-semester general chemistry at California State University, Fullerton. Contains 17 references. (WRM)

High school chemistry students' (n=183) applied and theoretical knowledge of dissolution, diffusion, effusion, and states of matter were compared. Study found that students' formal reasoning ability and their preexisting knowledge are associated with their conceptions and use of particulate theory. A significant difference between applied and…