The domain of motion or kinematics is important because it forms the basis of mechanics, an important branch of physics. By studying kinematic phenomena in the laboratory, high school students are likely to develop a better understanding of kinematics concepts as well as elements of the scientific approach to study natural and constructed…

The Prime Minister's Committee on Natural Science in Education in Great Britain reported in 1918 that "...in many schools more time is spent in laboratory work than the results obtained can justify." Seventy years later this conclusion can often still be drawn. This is particularly a problem in open distance education where laboratory practicals,…

Describes an experiment in which students use ion exchange chromatography to separate a mixture of chloro complexes of transition metal ions and then use spectrophotometry to define qualitatively the efficiency of the ion exchange columns. Background information, materials needed, and procedures used are included. (JN)

Reports a consecutive first-order reaction for which the concentrations of reactant, intermediate, and products can be determined simulataneously. This reaction is the epoxidation of 2,5-di-tert-butyl-1,4-benzoquinone (I) by alkaline hydroperoxidation using tert-butyl hydroperoxide and benzyltrimethylammonium hydroxide (Triton B) catalyst.…

Discusses a graphical procedure which allows the distribution constant of iodine to be determined simultaneously with the trihalide anion stability constant. In addition, the procedure extends the experimental chemistry from distribution equilibria to important thermodynamic and bonding features. Advantages of using the procedure are also…

Science teaching practices at the Long Island School for the Gifted emphasize hands-on experiments where children do the work and the teacher assists learning. This approach bypasses the reading/writing barrier that prevents some children from learning science. Many science experiments are described, including a first-grade lesson on using…

These demonstrations stress individual differences, a concept becoming increasingly important in psychological research. Intended for use in undergraduate psychology courses, four demonstrations that illustrate common examples of human variation are described. The demonstrations deal with the following individual differences: taste blindness,…

Smaller amounts of materials are used in organic chemistry experiments as a means of improving air quality in the laboratory. Presents a preliminary study of the emissions from selected processes and the mixing of these emissions within the laboratory atmosphere. (JN)

The Rockwell AIM 65 is recommended for use in physics laboratories. Among advantages cited are that the basic board can be purchased customized; for example, it can be purchased with or without a printer, power supply, extra memory, and other items. In addition, the computer is basically designed to control equipment and take data from peripheral…

Smaller amounts of materials are used in organic chemistry experiments as a means of improving air quality in the laboratory. Outlines benefits from this approach and describes two representative experiments in detail. These experiments are the Cannizzaro reaction and preparation of an aromatic nitrile. (JN)

Describes a quantitative evaluation of an interactive videodisc program in which students measure the temperature dependence of the solubility product of lead chloride by titration of chloride with silver nitrate using a Mohr titration. Student reaction (based on responses made using the program, quiz answers, and laboratory performance) was…

Chemistry students selected a main group of the periodic table, researched the group, and then presented a 70-minute lecture on the group; conducted two lecture demonstrations; and performed two laboratory experiments. This was done to determine what descriptive chemistry should be included in a new sophomore-level inorganic chemistry course. (JN)

A course was developed to help science teachers in Mississippi teach physics. Most of those teaching the subject were inexperienced in physics, had limited background in the subject, and were in need of help. The course provided these teachers with a deeper understanding of physics principles, emphasized problem-solving strategies, and included…

Civil lawsuits brought for injuries to students are a source of growing concern for teachers, and especially for science teachers. This paper outlines some basic principles by which science teachers may protect themselves from lawsuits, before and during the time that students are engaged in experiments or lab work. Courts in this country have…

Specific ways in which lectures, laboratories, cooperative group learning, and examinations and grading can be used as part of a strategy to increase pharmacy student interest and involvement in basic science are outlined. The techniques focus on making the presentation of content at least as important as the content itself. (MSE)