Ohio's PreK-12 digital library includes teaching resources based on Ohio's Learning Standards. E.g. World Book Student (encyclopedia), Go! Ask, Act, Achieve (project-based learning resources), Science Online (STEM resources), and EBSCO databases.
Every lesson plan on ReadWriteThinkTM has been aligned not only to the IRA/ National Council of Teachers of English Standards for the English Language Arts but to individual state standards and Common Core State Standards, when applicable.
Our Teacher's Guides and Lesson Plans are developed by professional educators and offer extensive teaching ideas, curricular connections, and activities that can be adapted to many different educational settings.
MERLOT contains peer-reviewed and selected higher education online learning materials, cataloged by registered members and a set of faculty development support services. See especially the Materials and Learning Exercises links under the Browse drop down menu.
OER Commons uses a variety of categories to organize resources. The categories are assigned by the resources' creators and the OER Commons administrators, and they describe various aspects of the items, including grade level, subject area, and material type.