This article reports an investigation of a professional development program to enhance elementary teachers' ability to engage their students in argument from evidence in science. Using a quasi-experimental approach, three versions were compared: Version A--a 1-week summer institute with a 2-week summer practicum experience and 8 follow-up days…

Considerable evidence suggests that dialogical interaction in the classroom promotes students' scientific knowledge building and reasoning. Hence, scientific argumentation is recognized as a central component of the Next Generation Science Standards. A focus on argumentation, however, requires teachers to adopt instructional practices that…

We report the results of a pilot validation study of the Quality Assessment in Science Notebook, a portfolio-like instrument for measuring teacher assessment practices in middle school science classrooms. A statewide sample of 42 teachers collected 2 notebooks during the school year, corresponding to science topics taught in the fall and spring.…

This report presents findings from two investigations of the use of classroom artifacts to measure the presence of reform-oriented teaching practices in middle-school science classes. It complements previous research on the use of artifacts to describe reform-oriented teaching practices in mathematics. In both studies, ratings based on collections…

It is important to be able to describe instructional practices accurately in order to support research on "what works" in education and professional development as a basis for efforts to improve practice. This report describes a project to develop procedures for characterizing classroom practices in mathematics and science on the …