Presents three experiments exploring aspects of the greenhouse effect. Topics and discussion includes radiation in energy transfer, emissivity and absorptivity, the irrelevance of reflectivity, a digression on insulators and convection, climate change, and radiative energy balance. (MCO)

Presents a teaching activity that uses photographs and diagrams to simulate two microscopic laboratory techniques used to observe the structure of chromosomes. Techniques include observation of squashed onion root tips and the salivary glands of some fruitfly larvae. (WRM)

Suggests using Bryophyllum pinnatum to illustrate botanical principles. Includes tips for keeping and maintaining the plant in the classroom and suggests several student activities, including observing root/shoot growth, investigating apical dominance, exploring multiple leaf development, and others. (JN)

Presents detailed instructions and teaching tips for demonstrating resonance and the resulting fracture in a wine glass. (WRM)

This second-year student manual contains 140 brief related science lessons applying science and math to trade activities in the field of stationary engineering. The lessons are organized into 16 units: (1) Introduction to Stationary Engineering, (2) Engineering Fundamentals, (3) Steam Boilers, (4) Boiler Fittings, (5) Boilerroom System, (6)…

Discusses concepts that can be taught using bicycles. Includes examples of activities/experiments using these devices as well as suggestions for their use as research tools for student projects. One area of investigation suggested is an examination of variables that determine the speed at which a bicycle moves. (JN)

Provides an anthology of references to descriptions of analytical chemistry techniques from history, popular fiction, and film which can be used to capture student interest and frame discussions of chemical techniques. (WRM)

Describes a set of displays on the theme of coupled mechanical oscillators. Displays encompass three common demonstrations: (1) a coupled pair of identical pendulums; (2) a multiple-pendulum resonance demonstration; and (3) a Wilberforce coupled oscillator. (MDH)

Describes the design of the superconducting bird, a device to demonstrate the phenomenon of superconductivity. Discusses the utilization of the device as an example of a motor and compares it to the toy called the drinking bird. (MDH)

Describes a unit on biodiesel from a socio-critical chemistry teaching approach aimed at improving student participation and decision making. Explores the use of biodiesel (chemically changed vegetable oils), especially in Europe. The unit proved to be successful as students participated enthusiastically and social and scientific goals were…

Describes a simple demonstration of the flow of sand through an orifice at the bottom of a sandbox. Advocates the experiment's use with dimensional analysis for students in an introductory physics course. (WRM)

Describes the construction of an exponential decay graph that can be used in a science class to support discussions about the uses of radioactivity, its risks, limitations, and advantages. (WRM)

Describes the construction and use of a magnetic needle that is stronger than those conventionally used for experiments with electromagnetism. (WRM)

Presented as part of a larger unit on watershed investigations are a slideshow script and a map and compass unit intended to help high school students better visualize the relationship between a water sampling site, the entire stream, community, and watershed. The script discusses features of a topographical map, shows how to read one, and…

Describes an advanced, senior-level biochemistry course designed for students planning to pursue careers in nursing, engineering, and agriculture. The course follows a college-type format to expose students to college level course work. Course description, outline, and supplementary materials are included. (JM)