From the brief: The Elements: Transforming Teaching through Curriculum-Based Professional Learning is a Challenge Paper from Carnegie Corporation of New York that explores how professional learning anchored in high-quality curriculum materials can allow teachers to experience instruction as their students will, change instructional practices, and lead to better student outcomes. The goal of a Challenge Paper is to lift up ideas and issues in a way that will influence fields and the nation’s agenda. The subjects we deal with, along with the questions that we explore and the issues that we frame, grow out of our grantmaking work.