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Turn-On Common Core Math - site states - is designed to elaborate the "scientific basis" of learning trajectories research and link to the Common Core State Standards. Unpacked descriptors describe students' movement from naive to sophisticated ideas by identifying bridging standards; underlying cognitive principles; student misconceptions, strategies and inscriptions; and models, related representations and contexts.

Free Technology for Teachers: Two Excellent SMARTBoard Blogs to Bookmark

6th grade common core math resources

High School Math Standards - select to see illustrations and explanations of each standard

High School Standards (plus others): scroll over each standard to see sample problems

For 4th grade - Back to School Quick Common Core is a packet of ten different math worksheets featuring a fun back to school theme.