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)

Describes a bioassay laboratory exercise designed to introduce students to both acute and chronic bioassay procedures. Reinforces ecological principles and provides opportunities for students to use knowledge learned in the classroom in a realistic and ecologically-relevant situation. Contains 11 references. (JRH)

Determines that the philosophical basis for science education is likely to be an interesting field in the 21st century and that there is a need to provide the practicing teacher with some ideas for daily work such as local, national, and international student cooperation; using student lab reports to develop local scientific journals; and having…

Explores the dominant factor controlling the distribution of Daphnia. Describes components of a temperature gradient apparatus that can be assembled from materials readily obtainable in the laboratory and hardware stores. Investigates whether the mean depth of Daphnia is determined by temperature. (KHR)

Describes an automatic pipette washer that is functional, inexpensive, and easy to construct from locally available parts. (KHR)

This article describes the basic physics of several types of holograms and discusses different recording materials in use. Current and possible future applications of holograms are described as well as their large-scale production. (Author)

Although all students need more and better science classes to face the next century's challenges, students gifted in science also need access to dedicated teachers willing to assist their learning progress and encourage their production of original research projects. Integrating the science curriculum would also benefit gifted and other students.…

Discusses the nature, resolution, focal length, and angle of a pinhole camera. Describes the development and some applications of the camera. Nineteen references are listed. (YP)

Described are the history, formation, and observing techniques of meteors and comets. Provided are several pictures, diagrams, meteor organizations and publications, and meteor shower observation tables. (YP)

Presents a science experiment to demonstrate the emergence of a snake from an "egg" and illustrates the necessity of heat to induce the hatching process. (MKR)