For many years, writing centers have based their pedagogy on "collaboration." Now it is time to reflectively examine whether tutorial collaborations actually correspond to those definitions on which it is generally assumed they are based. Current practices assume that "collaborative" practices include non-authoritative pedagogy…

This laboratory training manual on laser communications and fiber optics may be used in a general technology-communications course for ninth graders. Upon completion of this exercise, students achieve the following goals: match concepts with laser communication system parts; explain advantages of fiber optic cable over conventional copper wire;…

Writing centers and their faculty are often considered to be "Others" because they have both power and no power--they have the ability to make a difference in students' writing abilities, but they are often excluded because they are seen as a "fixit," a clinic, a lab, an ancillary. Writing center faculty need to take more power so that they can…

Describes the construction of a demonstration to show optical activity of table syrup. (Author/CP)

Describes the construction of a flexible coupled-cavity interferometer for student use. A helium-neon laser and phonograph turntable are the main components. Lists activities which may be performed with the apparatus. (Author/CP)

Describes several oscillating chemical reactions which can be used in undergraduate chemistry laboratories. In one such reaction, ferroin oscillates from red (reducing solution) to blue (oxidizing solution) for about an hour at a frequency which can readily be shown to depend on such factors as the temperature, type of solvent, and concentration…

New apparatus and equipment are briefly described. Sources of materials are given. (MLH)

Presents notes on three physics experiments on (1) light and lenses, (2) determination of the pVT surface of a freon, and (3) use of an eyepiece with microscopes and telescopes. (RH)

Discusses legislation and programs aimed at preventing occupational cancer. Includes the results of recent research in the identification of occupational carcinogens. (MLH)

A survey of 22 popular organic chemistry textbooks showed that only four correctly stated that of the two components of starch, amylopectin is the water-soluble, and amylose is the water-insoluble. (MLH)

Describes a set of biochemistry laboratory experiments in which tetrameric hemoglobin is separated into its subunits then formed again by recombination of the subunits. (MLH)

A method of building mazes with exactly one solution is described. (SD)