Understanding genetic drift is crucial for a comprehensive understanding of biology, yet it is difficult to learn because it combines the conceptual challenges of both evolution and randomness. To help assess strategies for teaching genetic drift, we have developed and evaluated the Genetic Drift Inventory (GeDI), a concept inventory that measures…

Understanding how educational practitioners make sense of and subsequently implement policy has been an increasingly important objective of the K-12 research community. This study extends this research into higher education via an in-depth case study of an urban public 2-year technical college. Drawing on sensemaking theory and critical policy…

Purpose: The authors examined longitudinal associations between 2 categories of parent verbal responsiveness and language comprehension and production 1 year later in 40 toddlers and preschoolers with a diagnosis of an autism spectrum disorder (ASD). Method: Parent-child play samples using a standard toy set were digitally captured and coded for…

This study was undertaken to gain insights into undergraduate students' understanding of early embryonic development, specifically, how well they comprehend the concepts of volume constancy, cell lineages, body plan axes, and temporal and spatial dimensionality in development. To study student learning, a curriculum was developed incorporating…

THE PROBLEM OF THIS RESEARCH WAS TO INVESTIGATE THE RELATIONS THAT MIGHT EXIST BETWEEN TEACHER KNOWLEDGE OF AND PRACTICES IN THE DEVELOPMENT OF READING COMPREHENSION. PRELIMINARY TO THE DEVELOPMENT OF SPECIFIC RESEARCH QUESTIONS WERE A SERIES OF GENERAL QUESTIONS GROUPED UNDER THESE MAIN CATEGORIES--(1) TEACHER KNOWLEDGE OF COMPREHENSION THEORY,…

A teacher's scientific understanding has a dramatic impact on students' ability to learn science. This article describes the results of administering the Astronomy Diagnostic Test to 142 science teachers in Wisconsin. The results show that these teachers are lacking a deep, coherent understanding of astronomy concepts. Implications for these…