Illuminations
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Illuminations is a website designed by The National Council of Teachers of Mathematics to provide Standards-based resources that improve the teaching and learning of mathematics for all students.
The National Council of Teachers of Mathematics is a public voice of mathematics education, providing vision, leadership, and professional development to support teachers in ensuring mathematics learning of the highest quality for all students. With 100,000 members and 250 affiliates, NCTM is the world's largest organization dedicated to improving math education in preK‑12.
