Clickers are electronic response devices with which a student can remotely submit responses to questions or problems posed by a teacher. The problems are typically true-false or multiple-choice questions, but can also include numerical problems. Clicker devices are particularly popular in large-enrollment introductory science, technology,…

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 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)

Reports on a study designed to determine the relative effectiveness of different instructional approaches on chemistry laboratory achievement. Investigated differences in achievement in spectrophotometry among college freshmen who received either traditional, learning cycle, or computer simulation instruction. Results indicated that students…