Tells of an experiment introducing the Montessori system (which is described), stressing individualized approach, in a junior high school. Good results were obtained with good and poor students. It is concluded that the system could be relevant for beginning English classes in other types of schools. (Text is in German.) (IFS/WGA)

Outlines an experimental procedure in which an iodine radioisotope is used to determine molar combining ratios of lead and silver with the iodine. Tables and graphs show the definitive results that should be attainable. (CP)

Describes a laboratory experiment in which the students prepare an antichap lipstick from basic ingredients and demonstrate solubility relationships between these ingredients and water. (MLH)

The pedagogy and an extensive listing of topics suitable for large scale demonstrations are provided. (CP)

Describes two experimental procedures and the reactions suitable for teaching the principle that catalysts do not affect the position of equilibrium. (GS)

Describes an activity which incorporates topographic map interpretation, soils analysis, hydrogeology, and local geology in a five-week series of exercises for an introductory college earth science class. (CP)

Provides an account of the way in which one small university has coped with limited funds and a small staff to provide laboratory activities for freshman physics courses. (CP)

Explains an error analysis procedure using the computer which requires no previous student experience with the computer. (CP)

Explains how to start and operate a science club for grades 4-6 and presents some suggested activities. (BB)

The use of participatory lecture demonstrations in the classroom is described. Examples are given for the following topics: chromatography, chemical kinetics, balancing equations, the gas laws, kinetic molecular theory, Henry's law of gas solubility, electronic energy levels in atoms, and translational, vibrational, and rotational energies of…

The electrode is a lead dioxide-silver plated wire. Construction of the electrode is simple, straightforward, and provides valuable laboratory experience. (Author/BB)

Describes a demonstration for measurement of biophysical signals produced by the human body. The signals, after amplification, could provide acoustical feedback through a voltage-controlled oscillator (VCO), or they could be seen either with an oscilloscope or a high speed chart recorder. (GA)

Describes the results of a study on the use of computer-simulated chemistry experiments. Four different simulated experiments were compared with four comparable laboratory performed experiments. Concludes that simulation has better results and is a good teaching procedure. (GA)

Describes the apparatus used and the experiments performed by a blind student in a freshman analytical chemistry course. (GA)

The Japanese morning glory, a short-day plant, is an excellent specimen for studying photoperiodism. This article gives ideas for investigations including the effects of hormones, light quality, and temperature. Preparation of the seed is also discussed. (BB)