The Mathematical Sciences Education Board (MSEB) of the National Research Council was established in 1985 to provide national leadership and guidance for policies, programs, and practices supporting the improvement of mathematics education at all levels. Curriculum materials for grades K-12 play a central role in what mathematics topics are taught in our schools, how the topics are sequenced and presented to students, what levels of understanding are expected, what skills students will develop and when. Schools, practitioners, policy makers, and the public depend on evaluations of materials undertaken during their development and implementation in making decisions about the appropriate uses of the materials
