Explains an activity that allows students to visualize antigen-antibody type reactions and learn about antibodies and antigens without performing blood typing tests. Provides directions for students and a comparison chart of a blood typing simulation with procedure which is based on the reactions of certain ionic solutions when mixed. (RT)

Describes two demonstrations: 1) the effect of polarity on solubility using sodium dichromate, TTE, ligroin, and water to form nonpolar-polar-nonpolar layers with the polar layer being colored; 2) determination of egg whites to be yellow by determining the content of yellow colored riboflavin in the egg white. (MVL)

This article describes a lesson in which students construct Bohr's planetary model of the atom. Niels Bohr's atomic model provides a framework for discussing with middle and high school students the historical development of our understanding of the structure of the atom. The model constructed in this activity will enable students to visualize the…

Middle-school students should develop and refine their understanding of the interrelationships among science, technology, and society while they are studying content. Several strategies to accomplish teaching the history and nature of science can easily be integrated into the science class with a little planning and research. Incorporating the…

The nature of science is a vital part of students' educational experience. It includes understanding what science is and how it works, in accordance with Content Standard G of the "National Science Education Standards" (NRC 1996). Effective science instruction requires incorporation of science content, science processes, and the nature of science.…

This paper reports the design and evaluation of small-scale teaching interventions addressing the epistemology of science as part of the regular high school science courses followed by English students. Although there is a growing consensus that the curriculum should include aspects of the nature of science, there is a limited body of knowledge…

In this paper, in response to Ajay Sharma's paper titled "Portrait of a science teacher as a bricoleur: A case study from India" and associated reviews, I address the value of bridging two narrative styles for describing teacher development, discuss questions of over-essentializing an Indian school context, propose that teacher and…

Studies have shown that students, after having studied physics concepts and being familiar with them for an appreciable time, may nevertheless lack the ancillary knowledge needed to use such concepts reliably; correspondingly, they exhibit major misconceptions and errors. Provided in this paper is an analysis of the ancillary knowledge required to…

The Engineering Department's vision for undergraduate education for the next century is to develop a set of laboratory experiences that are thoughtfully sequenced and integrated to promote the full development of students in all courses. Optoelectronics is one of the most important and most demanding courses in Electrical and Computer Engineering.…

Presented is an analogy that can be used to explain the particle theory of matter. The three phases of matter are represented by preschoolers, yuppies, and senior citizens. The value of using analogies is discussed. (KR)

Presents a device to illustrate the concepts of entropy of mixing and the contribution of one term in the Gibb's equation. Notes the device is relatively easy to construct and provides a visual demonstration on diffusion. (MVL)

This paper urges educators of deaf students to make a greater effort to teach science conceptually to foster real understanding and produce scientifically literate students. The state of science education in general, and for deaf students specifically, is reviewed. Recommendations stress process-oriented teaching, cooperative learning, and…

Examines a beginning elementary teacher's experiences participating in an educational research project and her work in the classroom to bring her students' ideas into contact with accepted scientific ideas and practices. The project explored an approach to professional development that engaged teachers in learning and viewing science as a socially…

Reports on the Iowa Project, a broad effort in 20 school districts where a Science-Technology-Society (STS) approach was emphasized through a constructivist philosophy of teaching and learning. Results indicate the project's success in four areas: strengthening teacher confidence and knowledge base, encouraging teachers' use of innovative…

Discusses the influence of a reflective, explicit, activity-based approach to nature of science (NOS) instruction used in an elementary science methods course on preservice teachers' views of some aspects of the nature of science. Finds that participants made substantial gains in their views of some of the target NOS aspects. Advocates a…