High-quality K-12 instructional materials can meaningfully improve teaching practice and student achievement, especially when paired with professional learning support. Yet state policymakers have usually left ultimate authority for textbook selection to school district leaders. Consequently, the quality of materials across U.S. classrooms and…

The vast majority of U.S. teachers supplement their officially adopted curriculum materials with unofficial materials. Despite this, the body of supplementation-relevant literature tends not to focus on supplementation specifically, so lacks cohesion, and sometimes fails to capture all aspects the phenomenon. I systematically review…

Technological innovation is driving fundamental changes in all aspects of our lives. This is especially true of digital content, as our use of e-books, downloadable music, streaming television and movies, and online social networks has exploded. However, the explosive growth in our use of digital content seems so far to have eluded many of the 50…

Mathematics curriculum has long been a topic of keen interest in mathematics education and remains a central issue in efforts to improve mathematics learning opportunities for students. This Yearbook continues in a long line of National Council of Teachers of Mathematics Yearbooks that have addressed various facets of the changing mathematics…