A series of four studies tested two methods of revising instructional text to improve students' learning from it. In one method, the revisions untangled the "cognitive knots" in the text; in the second method, the revisions highlighted the "point" of the text. Subjects for the various studies were 40 students in an intact high…

A study examined the role that an elaborate analogy can play when high school students learn a concept from a leading science textbook. The elaborate analogy had graphic and text components that integrated and mapped key features from the analogy (a factory) to the target concept (an animal cell). The target features were parts of the cell and, by…

Two studies (which followed up a 4-year longitudinal study) examined the impact of hypertext on students' learning in science and English classes. The first study compared the impact of HyperCard stacks and regular textbook presentations of ideas in biology on ninth-grade students assigned to study these materials. Students in the second study, 10…

In the course of a longitudinal study that addressed the questions of how children learn to comprehend what they read and how they learn science concepts, many other research questions emerged. The original longitudinal study investigated how children learn to comprehend what they read. Three school districts with fairly stable student…