Describes a science laboratory experiment on odors which demonstrates the integration of chemistry and biology. Explains how the smell function works. (Contains 13 references.) (YDS)

Explains the capture-recapture method which is used to estimate population size by researchers. Uses a computer simulation game to teach students the capture-recapture method of population size estimation. (Contains 24 references.) (Author/YDS)

Uses popular sayings and proverbs to introduce chemical phenomena. Presents an exercise including 26 chemical concepts identified with matching proverbs and sayings. (YDS)

Uses Geographic Information Systems (GIS) in a classroom exercise to examine the distribution of toxic release sites in Queens, New York. Creates a series of maps to examine the relationship between the locations of known toxic releases and demographic factors such as race, education, income levels, and linguistic isolation. (Contains 47…

Explains a thin-layer chromatography (TLC) experiment that allows students to study complex mixtures of lipids using small volumes. Uses a water-soluble dye to stain lipids that is fast and safe. (YDS)

Uses materials collected from the seashore to stimulate students and recommends bringing materials to the classroom instead of trying to take students to the seashore, which may not be suitable for children with physical disabilities. (YDS)

Describes how the sound card of a personal computer can be used to collect data in physics experiments. Discusses gravity and simple waveforms. (Author/MM)

Introduces MacClade which is a Macintosh-based software package that uses the techniques of cladistic analysis to explore evolutionary patterns. Describes a novel and effective exercise that allows undergraduate biology majors to test a hypothesis about behavioral evolution in insects. (Contains 13 references.) (Author/YDS)

Describes an hour-long activity to illustrate the properties and use of cylindrical concave mirrors. Appropriate for non-science majors or high school students. (WRM)

Describes how to construct a diver that repeatedly submerges and rises to the surface of a tub of water from a plastic disposable pipet and baking powder. (WRM)

Presents information on the modern production of yogurt and describes a simple method for producing yogurt in the classroom using milk purchased from the grocery store. (WRM)

Describes an investigative laboratory activity that involves quantifying the decomposition rate of terrestrial leaf litter in soil microcosms using a 2-liter soda bottle. (WRM)

Presents methods that can be used to isolate the enzyme tyrosinase and to assay its activity. Lists instructions for a laboratory activity that has variable but frequently dramatic results. (WRM)

Explains how a toy called "Sound Bites" can be modified to demonstrate the transmission of sound waves. Students can hear music from the toy when they press it against any bone in their heads or shoulders. (WRM)

Describes the technique and benefits of having physics students practice connecting paper models of electric circuits before attempting to use real ones. (WRM)