Ways to use the "Arithmetic Teacher" in a preservice mathematics training program are promoted. (MP)

Presents three methods for removing silver nitrate stains, using (1) aqueous potassium iodide; (2) potassium ferricyanide in water; or (3) copper sulfate or chloride in water. (CS)

Focusing on history of physics, which began about 600 B.C. with the Ionian Greeks and reaching full development within three centuries, suggests that the creation of the concept of the atom is understandable within the context of Greek physical theory; so is the rejection of the atomic theory by the Greek physicists. (Author/SK)

Presents six selected chemistry notes which could be used in school chemistry courses. Each includes the name of the author and a description of activities suggested. A reading list is also presented. (HM)

Presents ten selected physics notes which could be used in school physics courses. Each includes the name of the author and a description of activities suggested. A reading list is also presented. (HM)

Discusses the oscillatory motion of a mass on a spiral (nonhelical) spring, and calculates the lowest eigenfrequency and the associated effective spring mass for a range of values of the attached mass. Analytic and numerical comparisons are made to the helical spring problem. (HM)

Some of the many educational computer programs available in todays market are described. Examples of the products of a dozen educational software vendors and their addresses are supplied. (MP)

An integral equation for the s-wave bound-state solution is derived and then solved for a square-well potential. It is shown that the scattering solutions continue to exist at negative energies, and when evaluated at the energy of a bound state these solutions do reduce to the bound-state solution.

Four teaching ideas are shared: a polar coordinate lesson geared towards seventh graders, geometry teaching aids for slower students, the use of pupil-named proofs in instruction, and examples of unifying "natural" connections between traditionally distinct mathematics topics. (MP)

Describes an apparatus that offers a very lucid demonstration of Poisson statistics as applied to electrical currents, and the manner in which such statistics account for shot noise when applied to macroscopic currents. The experiment described is intended for undergraduate physics students. (HM)

Presents two articles which are part of a series concerned with safety in school science in the United Kingdom. The two articles deal with restricted chemicals and experiments. (HM)

Lists suggested term paper topics and discusses the positive aspects of requiring a technical research paper and accompanying oral report of students who are mathematically and technically, rather than verbally, oriented. (CS)

Describes three activities: determination of the heat of combustion of a commercial breakfast cereal, qualitative analysis of halogens using hexane, and production of transparent soap. (CS)

Discusses hazards associated with the permanganate demonstration of volcanic eruptions. Alternate demonstrations are described, including the ammonium dichromate reaction, lava flow demonstration with baking soda and vinegar, and punk to illustrate air pollution from volcanic ash and cinders. (CS)

Four teaching ideas are discussed: a "giant" math problem designed to motivate students to use library sources, calculators, computers, and textbooks; a different way of finding fractional equivalents; a task-card project designed to encourage mathematics students to use libraries; and journal writing in a mathematics class. (MP)