This paper discusses the implications of Piaget's theory to science education. The first section of the paper, "What Science Teachers Need To Know: Scientific Knowledge and Its Source," describes three sources of students' knowledge and corresponding educational practices. The second section, "Functions of Intelligence," discusses the concept of…

Over a decade of research findings representing the work of more than 100 scholars are contained in the growing body of knowledge about effective schools. This report summarizes the results of studies that focus specifically on the characteristics of effective principals, classrooms, and teachers. The report also offers notes of caution to users…