ERIC (EBSCOhost) also includes some curriculum guides. Use the Advanced Search, and limit to SU subject:
Scroll down to add the limiters for Guides:
Use the Thesaurus to select precise search terms, or Search for curriculum using content area.
For example:
Examples of other thesaurus terms or search phrases you may find useful are:
Take advantage of the "Narrow Results" features at the left side of the screen. Click Subject to see options: