This paper gives an example of how to address the challenge of designing a learning progression that describes student thinking, with the necessary specificity to align instructional opportunities and assessment tools. We describe the Conceptual Underpinnings of Evolution project and the iterative process of developing a novel learning progression…

When should students collaborate during inquiry learning using an online learning environment? We compare "continuous collaboration" to "individual predictions" followed by collaborative exploration of natural selection and evolution in a unit featuring interactive models illustrating the marine biodiversity crisis. In the…