Presents a laboratory exercise in which students test the pH of different substances, study the effect of a buffer on acidic solutions by comparing the behavior of buffered and unbuffered solutions upon the addition of acid, and compare common over-the-counter antacid remedies. (MKR)

Using the movie Star Wars as inspiration, an activity is presented to introduce students to water's cohesiveness and how the surface tension of water can be disrupted. (MKR)

Describes a simple, inexpensive system that allows students to have hands-on contact with simple experiments involving forces generated by induced currents. Discusses the use of a dynamic force sensor in making quantitative measurements of the forces generated. (JRH)

Presents a laboratory demonstration that helps students understand the concept of microscope calibration. (JRH)

Presents a simple but effective experiment that uses ultrasonic transducers and some basic electronics to study the speed of sound using the Doppler effect. Eliminates the noise problems associated with most sound experiments. Discusses the theory, and describes the apparatus and procedure. (JRH)

Presents experiments involving the analysis of commercial products such as carbonated beverages and antacids that illustrate the principles of acid-base reactions and present interesting problems in stoichiometry for students. (JRH)

Presents several resistance measurement experiments based on the function of a magnetic multimeter. Resistance is measured in terms of the current that the internal dry cell drives through the unknown resistor connected across the input terminals. For use with digital and nondigital multimeters. (LZ)

This rationale for teaching elementary-level science using a hands-on approach emphasizes the importance of students learning the process by which an outcome arises rather than just remembering the outcome. The article encourages use of everyday objects rather than fancy scientific apparatus and offers suggestions for helping students undertake…

Describes the construction of a simple micro well colorimeter, some examples of its use, and its value in a high school or undergraduate chemistry curriculum. (ZWH)

Focuses on the nature of understanding by detailing the process of clinical interviewing. Examples from experiential learning in curriculum and teacher development lead to discussion of curriculum activity that celebrates the complexity of subject matter and the value of engaging learners in pursuing their own learning. (SK)

Uses an air track and microwave transmitters and receivers to make a Michelson interferometer. Includes three experiments: (1) measuring the wavelength of microwaves, (2) measuring the wavelength of microwaves by using the Doppler Effect, and (3) measuring the Doppler shift. (MVL)

Describes a safer, less expensive, preparation-efficient lab (microchemistry and mole) to aid teachers in teaching chemistry. Equipped with small-scale, hands-on activities, teachers can provide students an activity that allow them to collect, analyze, and discuss data all within a single class period. (ZWH)

Asserts that concerns over the use of animals in science education is confounded by the unworthy introduction of false sentiment by animal rights groups, which persist in ignoring the realities of biology. (PR)

Gives an analogy useful for explaining the experimental teleportation of a quantum-mechanical state to beginning physics students. (WRM)

Presents an alternative experimental arrangement that results in a considerable cost savings by reducing the number of sensors and other apparati required while giving excellent quantitative results for comparison with theory. (Author/CCM)