One of the biggest present challenges for teachers, especially in primary classrooms, is the need to address the content standards in all subject areas with the same amount of instructional time. While curriculum integration continues to be a powerful strategy to meet this challenge, teachers often find it difficult to bridge the gap between…

During the last quarter of a century, it became abundantly clear that the desired reforms in science teaching and learning could not be accomplished without significant professional development of in-service science teachers. Yet, there was a dearth of effective professional development models that could lead to the kind of instructional reforms…

Much of the general population is aware of terms such as biotechnology, genetic engineering, and genomics. However, there is a lack of understanding concerning these fields among many secondary school students. Few teaching models exist to explain concepts behind genomics and even less are available for teaching the visually impaired and blind.…

Our main goal in this study was to explore whether the use of models in high school molecular genetics instruction can contribute to students' understanding of concepts and processes in genetics. Three hundred and nineteen students from four comparable groups of 11th- and 12th-grade students participated. The control group (116 students) was…

In this paper we describe a model for a science fair, within the context of an elementary science methods course. We first describe the theoretical perspectives from which the idea of science fairs derives and we provide definitions as we sketch the characteristics of commonly used science fairs. We then describe the context and processes of a…

Some research indicates that a number of children understand vision as an outreaching of the sense, and that they are the originator of the process (Eaton, Anderson, & Smith, 1983; Guesne, 1985). The children draw arrows or rays that point out of the eyes, sometimes returning to the head, and write that vision involves the eyes seeing or…