Core Math Tools is a downloadable suite of interactive software tools for algebra and functions, geometry and trigonometry, and statistics and probability. The tools are appropriate for use with any high school mathematics curriculum and compatible with
the Common Core State Standards for Mathematics in terms of content and mathematical practices. Java required. 

Visit the STatistics Education Web (STEW)—an online resource for peerreviewed lesson plans for K12 teachers to improve statistics education at all levels. Maintained by the American Statistical Association.
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