This demonstration uses the electrophoresis of indicators to demonstrate the principles involved in the separation of isoenzymes. (BB)

Describes an experiment to characterize the enzyme polyphenol oxidase. Includes Purpose, Reagents and Equipment, Procedure, Extraction, Treatment of Data, and Discussion. (MA)

Describes an experiment in which Fresnel diffraction patterns were observed with a beam of slow neutrons of wavelength 4.33 Angstroms. (MLH)

Language arts and science activities are combined in a program based on the adventures of an imaginary character. (DD)

Describes a variation of "the suffocating candle" activity used to develop the process of predicting based on reliable data. Instead of using jars of varying sizes under which the burning time of candles is measured, the same jar is used while the candle is elevated on varying numbers of blocks. (CS)

Presents a chemistry experiment to illustrate the solubility behavior of an indicator in its neutral and ionic state and the consequences of acidity and basicity. (NB)

Presents activities in which students explore the conditions necessary for a candle to stay lit. Enables students to construct an accurate concept to explain their observation of water rising inside a tube in which a candle has burned out. (JRH)

Describes a pilot project for the home-study component of a first-year general chemistry course at Athabasca University that uses microscaled experiments. Presents four experiments and discusses home-study versus in-lab experience. (JRH)

Investigates students' causal beliefs about the relationship between variables in an electric experiment and the degree to which their tendency to make either idea-based or evidence-based statements depends on a prior belief about the causal efficacy of that variable. Reports that 34% of responses were idea-based despite the presentation of…

Presents demonstrations that use a "magic" flask to teach elementary concepts such as the color changes of various indicators and using the scientific method to predict the sequence of color changes. Catches students' attention by using an unexpected trick or element of magic. (JRH)

Evaluates the long-term use of integrated laboratories in undergraduate chemistry programs. Reports that this approach offers a number of advantages over conventional laboratories, including an improvement in the amount of student knowledge and experience gained, better preparation of students for research, and more efficient utilization of lab…

Presents a range of experiments in heat conduction suitable for upper-level undergraduate laboratories that make use of heat sensitive liquid crystal film to measure temperature contours. Includes experiments mathematically described by Laplace's equation, experiments theoretically described by Poisson's equation, and experiments that involve…

Describes experiments to address the properties of brass musical instruments that can be used to demonstrate sound in any level physics course. The experiments demonstrate in a quantitative fashion the effects of the mouthpiece and bell on the frequencies of sound waves and thus the musical pitches produced. (Author/NB)

Describes a sophisticated version of the fruit fly experiment for teaching concepts about genetics to biology students. Provides students with the opportunity to work with live animals over an extended period. (JRH)

Discusses strategies to duplicate current research protocols using biochemical methods of analysis. Describes the use of the Silver Sequence kit that provides a technically simple and relatively inexpensive DNA sequencing exercise. (JRH)