This study is part of a larger project exploring students' thinking of Dynamic Measurement (DYME), an approach to area measurement that engages students in dynamic digital experiences of measuring rectangular surfaces through sweeping lengths. The goal of this study was to evaluate the extent to which students could bridge the mathematical…

The big idea of "celestial motion", observational astronomy phenomena explained by the relative position and motion of objects in the solar system and beyond, is central to astronomy in primary and secondary education. In this paper, I argue that students' progress in developing productive, scientific explanations for this class of…

Research generally indicates that imagery facilitates children's learning on basic memory tasks, such as paired-associate learning. The role of imagery in prose recall is less well defined, however. The purpose of this study was to determine the effect of the construction of mental images on eight year old's ability to recall progressively…