A concern of computer-based learning system design is how to accommodate learners' individual differences during learning activities. Previous research suggests that adaptive e-learning systems can effectively address such individual differences and, consequently, they enable more directed tutoring via computer-assisted instruction. In this paper,…

Eighty-eight seventh grade students were randomly assigned to mastery or nonmastery approaches to learning four hierarchical chapters about sailing. The price of increased achievement benefits of group-based mastery learning seems to be increased time costs of (1) extra remedial time and (2) "wasted time" of faster learners. (Author/PN)

Successful teaching and learning of chemistry depends partly on correct use of a teaching method whose activities target most learning senses. Though chemistry enhances students' learning of biology, physics and agriculture on which Kenyan industries and prosperity depend, most secondary school students in Kenya perform poorly on the subject. This…