POWERSOURCE © Intervention: Improving Student Understanding of Basic Mathematical Principles

POWERSOURCE © is a formative assessment intervention that targets middle-school mathematics, specifically focusing on key mathematical principles that are prerequisites to mastering algebra. The intervention includes a system of learning-based assessments and an infrastructure to support teachers' use of those assessments to improve student learning. POWERSOURCE © assessments are designed to be short, targeted, and easily incorporated into existing curricula, with a focus on four domains: rational number equivalence, properties of arithmetic, principles for solving linear equations, and application of core principles to other critical areas of mathematics. The intervention also includes professional development for teachers, which provides guidance on understanding student responses to the assessments, teaching activities, and sample scripts to help students grasp key concepts.