Achieve the Core has put together this list of major, supporting, and additional content areas with the key instructional shifts. This is helpful when deciding which areas demand the most attention.
Mean, median, and mode used to be all over the grades before CCSS, but CCSS has remanded those concepts to sixth grade. This set of lessons is a great resource!
A mathematics consultant created a series of open-ended math questions for elementary through high school. This document has the questions as well as answers and rubrics.
Ohio's Online Resource Center has a very good collection of inquiry-oriented, open-ended math questions that you can choose based upon grade level and topic! The range is from third grade to high school, so finding a quality question that meets your students' needs is easy!
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