One of the greatest challenges instructors face is getting students to connect with the subject in a manner that encourages them to learn. In this essay, we describe the redesign of our Developmental Biology course to foster a deeper connection between students and the field of developmental biology. In our approach, we created a community of…

The electrical properties of polyaniline changes by orders of magnitude upon exposure to analytes such as acids or bases, making it a useful material for detection of these analytes in the gas phase. The objectives of this lab are to synthesize different diameter polyaniline nanofibers and compare them as sensor materials. In this experiment…

Describes in detail the laboratory procedure for studying the process of amitosis in the vegetative cells of Nitella axillaris. (BR)

The experiment described is an excellent opportunity to apply theoretical concepts of distillation, thermodynamics of mixtures and process simulation at laboratory scale, and simultaneously enhance the ability of students to operate, control and monitor complex units.

Procedures and discussion of an experiment to be used in an undergraduate course in spectroscopy are presented. The experiment involves the measurement of the absorption spectrum of sodium vapor. (DT)

An electron-spin-resonance experiment which has been successfully performed in an advanced undergraduate physics laboratory is described. A discussion of that part of the theory of magnetic resonance necessary for the understanding of the experiment is also provided in this article. (DT)

Presents a multipart experiment utilizing the same two compounds in preparation, interpretation of infrared spectra, and kinetic study. Several extensions of the experiment are included. (SLH)

Presents the author's philosophy of science which is a synthesis of the ideas of E. Mach and K. R. Popper. Describes the implications and some applications of this philosophy to the art of teaching chemistry. (GS)

The purposes of the study were to make an analysis of the status of science teachers in the Allen Parish school system (Louisiana) for the 1969-70 school year, to identify the problems of science instruction, and to show a breakdown of laboratory exercises performed by science consultants during an inservice summer session. The first part of the…

Forty female subjects were given intermittent options to transmit noncontingent promises of intent to cooperate during the course of a mixed-motive laboratory game. In a 2 x 2 experimental design, a robot target either reciprocated subjects' promise statements or concealed her behavioral intentions, and was either always cooperative or always…

This paper reports an experiment carried out by a sixth-grade science class by a pupil as part of the requirements of the laboratory section of the class. (Author)