Describes the use of batch-oriented computing as the basis for reintroducing homework problems as a teaching tool in beginning chemistry instruction. Stems from and expands upon a system used in a university setting that produces, delivers, grades, and keeps records for homework problems. (DDR)

States a convenient algorithm for temperature scale conversions and shows how performing the successive steps improves the accuracy of the results. (DDR)

Compares the precision, accuracy, and response of a cooking probe to a standard mercury thermometer in side-by-side heating in temperature baths, simple and fractional distillations, and melting point determination. (DDR)

Reviews a subjective exercise completed by students at the end of each of six units in an introductory organic chemistry course. Argues that instruction should be shaped by Ausubel's concept of meaningful learning. (DDR)

Describes the National ADC0804, an inexpensive and readily available integrated ADC converter that can convert an analog voltage to an 8-bit signal. Includes schematic drawings. (DDR)

Describes the history of the Worcester Polytechnic Institute's study abroad program for engineering students, its unique approach, and the structure that led to its success. Discusses the history of the Global Perspective program, the project centers and programs, traditional exchanges, student participation and selection, program costs,…

Describes a method for teaching electronic structure and its relevance to chemical phenomena that relies on computer-generated three-dimensional models of electron density distributions. Discusses the quantum mechanical background needed and presents ways of using models of electronic ground states to teach electronic structure, bonding concepts,…

Presents an easy and inexpensive method to demonstrate VSEPR theory that involves the use of only a ring stand, clamp, cow magnets, and a ball bearing. Has the advantage of producing a series of models using invisible magnetic repulsion forces to show the orientations occurring in molecules where similarly invisible electron repulsion forces are…

Discusses the collaborative approach of the Rocky Mountain Teacher Education Collaborative to helping preservice teachers develop pedagogical content knowledge. Describes a course in the teaching of chemistry that was believed to be key in the development of pedagogical content knowledge. Highlights assessment and reactions to the course. (JRH)

Describes a method of incorporating a suggestion box into freshmen chemistry lectures that has been successful in bringing the subject matter closer to the students' real-life experiences by inspiring them to look around and realize how chemistry affects their lives. Provides the instructor with fast lecture feedback and new curriculum ideas. (JRH)

Describes a method for illustrating the particulate and dynamic nature of chemical reactions that uses cut-out circles on the overhead projector. (JRH)

Describes a method that uses olefin pom pons to illustrate cubic crystal structure. Facilitates hands-on examination of different packing arrangements such as hexagonal close-packed and cubic close-packed structures. (JRH)

Discusses the disadvantages of commonly used models of crystals. Describes an inexpensive kit for constructing models of crystals. (JRH)

Examines students' misconceptions and proposed mechanisms related to current flow in electrolyte solutions and the salt bridge. Confirms reported misconceptions and identifies several new ones. Discusses probable sources of misconceptions and some methods for preventing them. Contains 27 references. (JRH)

Describes an activity that promotes analytical thinking and problem solving. Gives students experience with important scientific processes that can be generalized to other new laboratory experiences. Provides students with the opportunity to hypothesize answers, control variables by designing an experiment, and make logical deductions based on…