Dimensional analysis is traditionally one of the first topics covered in a general chemistry course. Chemists use dimensional analysis as a tool to keep track of units and guide them through calculations. Although unit conversions are taught in a variety of subjects over several grade levels, many students have not mastered this topic by the time…

Teaching the VSEPR (valence shell electron-pair repulsion) model can be a tedious process. Traditionally, Lewis structures are drawn and the number of "electron clouds" (groups) around the central atom are counted and related to the standard VSEPR table of possible geometries. A simpler method to deduce the VSEPR structure without first drawing…

Presents a plan for getting all students, including students that normally sit in the back of the room, to participate in class lectures. This plan is geared for classes that have 30-150 students enrolled. (SAH)

Because of drawbacks to the traditional lecture method, general chemistry lectures were stopped at appropriate times to allow students to complete prepared worksheets on problems related to current lecture material. Discusses rationale for and mechanics of the approach, including sample-problem worksheets used. (JN)

Heat changes in a lecture setting can be safely shown on an overhead projector using a simple and inexpensive apparatus. Heat evolution can be observed on a projector with adapted digital thermometers or by illuminating the red fluid in nonmercury thermometers. Describes a setup for doing this as well as a collection of demonstrations involving…

Describes the "One-Minute Paper," a teaching strategy used to encourage active learning by students and provide feedback to teachers. Enables the professor to establish a rapport with a large class of students and provides the professor with an insight into student difficulties and perceptions of the lecture material. (JRH)

Describes how to evaluate the effectiveness of demonstration assessments as assessment tools and instruments for developing conceptual understanding and critical thinking. (SAH)

Several common ideas were discernible in the plenary lectures of the fifth biennial conference on chemical education. Among these were: The decline in university and college enrollments and how to cope with them, how to prepare chemists for changing job markets, and how to improve scientific literacy. (Author/BB)

Recognizing that success in general chemistry is dependent on the development of disciplined study habits, the author motivates his students to develop these skills through prelecture assignments that introduce them to various studying strategies. The format and use of the prelecture assignments are described. (JN)

Describes a lecture teaching technique called lap-dissolve projection in which two slide projectors are operated alternately so that one visual image fades away while the next appears on the same screen area. (MLH)

Discusses the passive role that students often take in large classes and argues for teaching methods such as cooperative learning that place students in a more active learning environment. Examines the advantages and potential drawbacks of cooperative learning for large classes and provides suggestions on preparing for group work. (DDR)

Lecturing hints, periodic table, mechanistic approach to predicting inorganic reaction products for substitution reactions, reaction rates, spectroscopy, and entropy role change in establishing position of equilibrium for vaporization of water and synthesis of ammonia were topics of lectures presented at the Seventh Biennial Conference on Chemical…

Described are experiences related to the effective use of instructional aids (demonstrations, tapes, films, slides, and television) in teaching chemistry to college students. (HM)

Discussed is a series of lectures designed to illustrate the use of general organic chemical principles in molecular biology, introduce current research in interdisciplinary areas to the beginner, increase interest in organic chemistry, and bridge the gap between traditional organic chemistry, biology, and the consumer. An outline is presented.…

Extensive and detailed overhead projections, a complete set of reduced overhead miniatures in booklet form for each student, and tape recordings are used in a lecture setting to capitalize on the learning preferences of both visual and auditory learners. The use of the strategy in introductory chemistry is described. (JN)