A lock-in amplifier is a versatile instrument frequently used in physics research. However, many students struggle with the basic operating principles of a lock-in amplifier which can lead to a variety of difficulties. To improve students' understanding, we have been developing and evaluating a research-based tutorial which makes use of a computer…

Since fall 1972, Sacramento City College has operated a pilot project designed to provide minority students with extra tutorial and laboratory assistance and, thereby, to encourage them to pursue careers in mathematics, science, technology, and the allied health fields. The primary focus of the program was placed on one-to-one tutorials intended…

An autonomous multimedia computer-assisted instruction (CAI) general-education physics course was developed and evaluated at Florida State University (FSU). Based on a one-term conventional lecture course which had been given successfully at FSU for several years, the CAI course made use of an IBM 1500 instructional system to guide the student…

Techniques designed to improve basic competencies of minority students attending selected, historically black colleges are reviewed. The efforts to improve instruction in targeted subject areas have been implemented with the assistance of the Southern Regional Education Board. Attention is directed to: modification of curricula and instructional…