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)

Discusses the basic principles of baking soda chemistry including the chemical composition of baking soda, its acid-base properties, the reaction of bicarbonate solution with calcium ions, and a description of some general types of chemical reactions. Includes a science activity that involves removing calcium ions from water. (LZ)

States that advertising educators have been concerned with the lack of cooperation between advertising and marketing disciplines. Describes a cross-functional educational experiment in which two instructors (one from marketing and one from advertising) formed cross-functional teams for two projects. Concludes that the experiment was successful,…

While other lab exercises allow the student to isolate and study one component of the cell, the purpose of this lab is to break down the cell into several components and perform simultaneous assays to determine the constituents. Centrifugation is used as a separation technique. Provides procedure and expected results. (LZ)

The importance of targeting certain stages in the life cycle of the virus for antiviral therapy is discussed with reference to the Human Immunodeficiency Virus type 1. Research conducted on a core antigen, p24, is described. (MSE)

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)