Design-based learning (DBL) offers opportunities to support students' content understanding. Previous DBL studies reported different effect sizes by using the data from one participant group. The goal of this study was to conduct a meta-analysis that would give a comprehensive picture of how DBL is connected to student achievement in different…

This article examines kindergarten children's (5-6 years old) engagement in scientific practices, with a focus on generating and using evidence to support claims, during a 5-month project about snails. The research questions are as follows: (1) what meanings do kindergarteners construct for what constitutes evidence? How are those meanings…

Recent consensus documents in science education (e.g., the Next Generation Science Standards) emphasize helping students develop facility with constructing and critiquing both claims and the evidence that supports them. While students typically view evidence as necessary for supporting scientific claims, they tend to "objectify"…