Provides background relating cardiorespiratory disease to physical activity. Three laboratory activities are described: pulse response to posture change and quiet activity, pulse response to exercise (mild increasing to strenuous), and ability to extract oxygen. The last includes information on construction of an ergometer. (CS)

Presents articles on: the measurement of flouride levels in natural waters; the effect of sunlight on the rate of chlorine decomposition in a swimming pool; and curriculum development in Australian agriculture science. (MLH)

Describes an experiment for an honors organic laboratory course that allows the student to approach a synthesis with independent planning and the use of the literature. (MLH)

This paper calls into question prevailing approaches to educational research (contrived experiments) and proposes a new perspective in method, theory, and substance (natural experiments). (MM)

Describes the use of computer-assisted graphical displays in experiments to determine the order and activation energy for a chemical reaction. (MLH)

Describes an advanced inorganic chemistry experiment in which students prepare two coordination compounds and study their stereochemistry using infrared spectroscopy. (MLH)

Describes an experiment in which nitric acid is synthesized from ammonia on a small scale to illustrate a major industrial process. (MLH)

Describes a series of hands-on experiments that engage students in hypothesis testing and promotes active learning of the concepts of evolution and adaptation. Laboratory exercises demonstrate how features of the hands and eyes distinguish primates from other mammals. (SOE)

Introduces an inquiry-based laboratory experiment in which students identify an unknown bacterial species by using techniques such as Gram staining. Uses an authentic problem solving approach in a scenario entitled, "What poisoned the apple juice?" (YDS)

Three experiments were performed to study the relationship between reinforcer quality and behavioral momentum by varying reinforcer quality in two applied experiments and a basic laboratory experiment with rats. A study of two adolescent boys with mental retardation showed that compliance increasing effects could be improved by reinforcing…

Introduces chemistry laboratories in which students have the opportunity to conduct laboratory projects in multiple sessions that promote planning, thinking, technical performance, and responsibility. Defines the process of experimentation and its applications to science laboratories and describes successful project applications. (YDS)

Small-scale chemistry employs a modern design philosophy and small, inexpensive plastic apparatus to create a learning laboratory that fosters creativity, invention, and problem solving. This article describes the characteristics of the small-scale activities. A n-solutions chemical reaction matrix is provided with examples of classroom use. (YP)

Describes an organic chemistry experiment for teaching the basic concepts of chemical kinetics. Provides background information about first- and second-order reactions, experimental procedures of the Diels-Alder reaction between cyclopentadiene and dimethyl fumarate, and the experimental results. (YP)

Discusses advantages of the Stirling engine. Describes the details of constructing one from common materials, and its use for studying thermodynamics. (YP)

Discusses the use of an individually designed experiment for a chemical engineering laboratory course. Lists main ideas of the method. Provides an example of the experiment including ways to answer the questions and extensions. (YP)