This study examines teacher interactions with boys and girls in single-gender technology classes. We analyzed transcripts of videotapes of instruction, interviews with the teachers and students, student questionnaires, and final robot programs. Girls and boys differed in a number of ways, and teachers explained their differing interactions with…

This study reports on a science professional development initiative with elementary school teachers in Canada. Grades 4 and 5 teachers were involved in the implementation and modification of science kits, together with corresponding professional development activities. Each kit was aligned to specific outcomes in the curriculum and provided a…

Hands-on science typically uses physical materials to give students first-hand experience in scientific methodologies, but the recent availability of virtual laboratories raises an important question about whether what students' hands are on matters to their learning. The overall findings of two articles that employed simple comparisons of…

This paper reports a study on elementary students' ideas regarding changes in mass associated with melting. An open-ended probe was designed and distributed to fifth-grade students (n = 230). In addition, 50 students were asked their reasons behind predictions on mass change. The written responses indicate that, despite conventional teaching,…