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ERIC is the leading database for finding out what is in the education literature.
There are two ways to access ERIC: the green ERIC link takes you to the free U.S. Department of Education platform, and the purple ERIC--EBSCO link takes you a paid platform that CUNY subscribes to (login is required from off-campus). The EBSCO platform allows for more focused searching.
In either platform, you can browse the ERIC Thesaurus to convert your idea into descriptors, allowing for more precise searches. You can limit your results to peer-reviewed articles, and also to a specific publication type (methodology).