Advantages and disadvantages of nonexperimental paradigms in mathematics education are discussed. Suggestions are made for action toward establishing such designs as quality research. (MP)

A qualitative demonstration of wave motion along a linear spring is being used, quantitavely, to present three methods of measuring the phase velocity of the waves. (GA)

Describes an apparatus which allows one to study the speed distribution, the gravitational distribution, and the mean free path of steel balls agitated into two-dimensional motion through collisions with the moving walls of their enclosure. (Author/GA)

Describes a paper chromatography experiment designed for fifth and sixth grade students. Utilizes common materials that need no special ordering. Background information, conclusion questions, and sample chart are included. (MA)

This experiment is suitable for illustrating synthesis-analysis and isopolyanion chemistry at the freshman level or at a more advanced level. (BB)

In this general chemistry experiment students calculate changes in free energy of formation of inorganic salts from the free energy of formation of ions. Then they test the conclusions of their calculations by mixing solutions of the ions. (BB)

Describes a laboratory demonstration that can be used to convert an analog quantity into frequency, which can then be converted into a binary measure using either an oscilloscope or a frequency counter. (MA)

This is a college-level general chemistry experiment. (BB)

Describes how student responses to 26 bipolar adjectives describing laboratory studies are used at a New Zealand university to modify the content of laboratory experiments in physics. (MLH)

Describes a classification test that uses a sodium nitroprusside reagent to identify aliphatic and aryl amines. (MLH)

Tulving and others (Tulving, 1974; Tulving & Madigan, 1970) have distinguished two kinds of forgetting of verbal information: trace-dependent forgetting and cue-dependent forgetting. Attempts to determine which type occurs in retroactive inhibition of free-recall learning. (Author/RK)

The degree of equality or equity in reward allocations made by men and women is explored in three studies. (Editor)

Describes the construction of an inexpensive column for gel filtration and results of experiments suitable for undergraduate biochemistry students. (MLH)

The response times of 32 process schizophrenics and 16 nonhospitalized controls were compared on three visual search tasks. Results suggest that process schizophrenics are not abnormally slow when extracting information from visual displays, and they appear to perform similar operations and strategies to those of normals when doing so. (Editor/RK)

Examines the relative effectiveness of either partial or total success training as a preventive agent against the debilitating effect of noncontingent reinforcement. (Author/RK)