The classic silver mirror reaction at room temperature in textbooks usually used glucose to react with silver nitrate and ammonium nitrate with the presence of caustic alkalis. But the aldehydes such as acetaldehyde and propionaldehyde were difficult to react under the same condition. In this paper, Na[subscript 2]CO[subscript 3] was used to…

Research on teacher educators' professional learning has gained increasing interest within science education. Curriculum materials have been suggested as a means of supporting "teacher" learning for several decades but have not yet been examined as a potential tool for supporting the learning of "teacher educators." In this…

This study aimed to examine the development of pre-service science teachers' views of the targeted nature of science (NOS) aspects, which are considered more difficult to develop than other aspects. This study was grounded by conceptual change and experiential learning theory. A multiple comparative case study approach was used to explore…

Using multiple representations and argumentation are two fundamental processes in science. With the advancements of information communication technologies, these two processes are blended more so than ever before. However, little is known about how these two processes interact with each other in student learning. Hence, we conducted a design-based…

In this paper we present findings from a project that documented the development of preservice teachers' beliefs and practices in delivering science instruction that considers issues of language and culture. Teacher candidates in the intervention group (n = 65) received a science methods course and teaching practicum experience that provided…

The aim of this study was to explore a group of prospective primary teachers' conceptual understanding of diffusion and osmosis as they implemented a 5E constructivist model and related materials in a science methods course. Fifty prospective primary teachers' ideas were elicited using a pre- and post-test and delayed post-test survey consisting…

Constructivism posits that the teacher's role is to help their students to actively construct new understanding for themselves. Diagnosis of students' prior understanding followed by carefully planned teaching sequences enables learners to grasp hitherto unknown concepts. Assessing whether they can then apply their new knowledge in new contexts…

Analyzes problems with traditional teacher education, reviews the basic elements of the constructivist learning views, and discusses the advantages of a constructivist approach to science teacher education. (PR)

The teaching of evolutionary theory has historically been problematic, often times marred with legal and moral battles. In recent years, state boards of education have prohibited or somehow compromised the role of evolutionary theory in school science. Consistent with the diversity of beliefs in contemporary society, preservice science teachers…

Describes Pedagogical Content Knowledge and focuses on the empirical research directly concerned with the relationship between science teachers' subject matter knowledge or structures and actual classroom practice. Concludes there is little evidence that a relationship exists. (PR)

Describes a lesson on pseudoscience for a teaching methods course that promotes active student participation, is not a laboratory activity, and follows the sequence of the three phases associated with the learning cycle model. Contains a true-false science questionnaire to be administered to students as a bridge to discussion. (PR)

The purpose of this study was to examine changes in personal science teaching self-efficacy (PSTE), outcome expectancy (STOE), and science conceptual understanding and relationships among these in preservice teachers. Seventy preservice teachers enrolled in science teaching methods courses participated in this study. PSTE, STOE, and science…

Explains that many preconceptions and misconceptions ethnically different children bring to science instruction originate in their particular cultural heritage. In many cases these conceptions inhibit or interfere with the learning of scientific concepts. It is advised to impart to teachers with information about this source of difficulties in…

Investigates teaching propositional logic (hypothesis testing and scientific reasoning) to preservice teachers enrolled in an elementary science method course (n=48). Results indicate that students scored higher on a posttest of the Propositional Logic Test than on the pretest. Authors conclude that even a brief intervention in logic can improve…