Describes a method of determining the molecular weight of a weak acid. (SL)

Describes experiments and apparatus used to study the interaction of falling water drops on water surfaces and the collision between pairs of drops. (SL)

Includes methods for determining melting and boiling points, illustrating the Finkelstein reaction, choosing acid-base indicators, growing perfect NaC1 cubes and "whiskers," bromination of alkenes, using vanadium in the laboratory, preparing phenylamine-copper (II) sulfate (VI) complex, simulating first-order chemical kinetics on a programmable…

Includes methods for demonstrating Schlieren effect, measuring refractive index, measuring acceleration, presenting concepts of optics, automatically recording weather, constructing apparaturs for sound experiments, using thermistor thermometers, using the 741 operational amplifier in analog computing, measuring inductance, electronically ringing…

Includes methods for using harmonographs in demonstrating motion of pendulums, constructing an electrostatic "bell," inverting mirror images, demonstrating the corrosion rate of steel, demonstrating expansion, studying rate of reaction between magnesium and hydrochloric acid, using matchboxes in science for containers, problem boxes, building…

Describes an experiment for determining the blackbody radiation constant hc/k, utilize a conventionally built cavity and a single-beam, single-window Perkin-Elmer 12-C model spectrometer. (SL)

A report is made of a study tour to Europe and Japan. The status of language laboratories and audiovisual education is discussed and machinery and methods described. (RM)

A rebuttal is made to an article entitled "The Case Against the Conventional Language Laboratory" by John R. Allen ("System," Vol. 2, No. 1). Arguments made in that article against the language laboratory are outlined and discussed. (RM)

Describes a method of bottle cutting. The bottle is filled half full of motor oil and a heated iron rod is inserted into the oil. (SL)

With the development of sophisticated techniques in the biology of conception, fetal research, sustaining life after functional death, and abortion, legal and ethical questions face the medical community. (JD)

Describes activities by which the porosity and permeability of materials with respect to water can be measured. (CP)

This article describes how Robert LeBleu's interest in aquatic life developed and that today he owns a large hydroculture operation supplying research crayfish nationwide. Suggested laboratory experiments with crayfish are described, as well as information on additional studies, equipment needs, and tours of the hatchery. (MA)

Compared to regular education students (N=80), students (N=57) in public school special education programs perceived themselves as having less control at school and reported lower levels of happiness. Special education students (N=51) in laboratory program emphasizing perceived control had higher perceptions of control at school and more positive…

Biomimetic chemistry is concerned with the synthesis of small, molecular weight molecules which mimic the properties of metal-containing sites within certain biologically significant species. A series of experiments for an advanced undergraduate laboratory is described as a way to introduce this area into the chemistry curriculum. (JN)

Examines two West Virginia writing centers and finds no significant difference in the writing quality growth of students taught by individualized instruction in writing centers and those taught by conventional classroom instruction. Finds that the writing center programs achieved the same gain at one-half the instructional cost. (RS)