The seven articles of this theme issue bring together recent theoretical work in investigating the kind of conceptual change that occurs in the learning of the physical sciences. How conceptual change occurs and the implications for science instruction are considered. (SLD)

Explored whether there are changes with age in understanding the specific distinction between natural and human-made phenomena and whether an appreciation of this distinction influences children's beliefs about the possibility of altering or transforming different categories of objects. Found that this distinction, a powerful organizer for adults,…

Describes the construction of a children's calendar for use in school, including development of time concepts, devising event-recording systems, daily and weekly schedules of events, multiple-week schedules of events, and a day-date calendar. (MKR)

The most time consuming and expensive step in developing expert systems is knowledge acquisition (KA), and it is important to determine how the limited resources for acquiring knowledge should be allocated across different sources. This paper develops a model that determines how KA resources should be spent and how such a model may be used. (23…

Summing powers of integers is presented as an example of finite differences and antidifferences in discrete mathematics. The interrelation between these concepts and their analogues in differential calculus, the derivative and integral, is illustrated and can form the groundwork for students' understanding of differential and integral calculus.…

The consistency, if any, with which force concepts are used by individual students in different, but closely related, contexts was investigated. A total of 534 university and high school students were tested to elicit their beliefs about the forces acting on various objects. Students' beliefs about the forces acting on objects at rest and in…

It is difficult for students to unlearn misconceptions that have been unknowingly reinforced by teachers. The examples "multiplication makes bigger,""pi equals 22/7," and the use of counter examples to demonstrate the numerical property of closure are discussed as potential areas where misconceptions are fostered. (MDH)

Structure of mathematical concept of multiplication and its integration into conceptual system, with respect to formal and informal aspects of understanding for 10 university students, are investigated through linear scale assessment of examples for prototypical effects and through follow-up interview which included direct explanations of…

Children's conceptions of the emotions of guilt versus shame were investigated in 2 studies involving children ages 7 to 9 and 10 to 12. Age-related differences in conceptions of guilt and shame emerged. The older children understood the adaptive implications of both emotions, whereas the younger children perceived them more in terms of the…

Reviews relevant scholarly literature on hypermedia from two perspectives: (1) an analysis of hypermedia in terms of learning theory; and (2) the implications of several characteristics of hypermedia for instructional designers, including its impact on learner control, concept development, and collection of data on student performance. Research…

Learning cycle techniques (exploration, concept introduction, and concept application) are presented as an effective way to help students with hearing impairments to develop science concepts and process skills. A teacher inservice program developed at the University of Indiana to help teachers use learning cycle strategies for teaching science is…

Examines the effects of providing undergraduate learners with graphic illustrations of coordinate concept relationships to supplement text-based instruction. Half of those reading a specific passage received a graphic concept tree. That group outperformed those who did not, reporting significantly higher amounts of attenuation, confidence, and…

Presents five essential strands that should be spiraled through social studies curriculum. Argues these strands suggest concepts that need to be developed. Lists key concepts and presents a way to teach ideas and concepts to intermediate-grade students. Outlines a teaching/learning sequence for concept development and illustrates how the concepts…

A buoyancy prediction test was developed to access preschoolers' early understanding of density. Two- to five-year-olds and college students make predictions about the buoyancy of a set of objects that varied in density, weight, and volume. Found that children aged four and five demonstrated patterns of judgment similar to those of the college…

Presents a method to teach the concept of a mole that demonstrates the logic of empirical science using the concept of equivalent mass. (MDH)