The primary and secondary resources available at the Library of Congress come in a rich variety. There are audio files, webcasts, YouTube videos, hand-written notebooks, pictures, newspapers, books, and more. Not only can you use these resources to enhance your instruction, but students can also use them to make connections between their learning and historical context. Imagine students creating their own products with Library sources and learning to cite them appropriately. For younger students, I might create a folder of possible resources for them to use in a shared Microsoft or Google folder.
Searches can be made easier by creating a list of potential search terms. Terms are used differently throughout the year. It's important to understand that a refrigerator used to be an icebox and light bulbs were incandescent lamps. This is where an internet search can help to identify additional terms to search under. Below are some easily accessible resources ready for educators. Primary Source Sets include groups of various primary sources that address particular subjects. Another great resource is using the Ask a Librarian feature available on the Library of Congress website.
Congressional Research Services has some reports that are also available to the public https://crsreports.congress.gov/
Teacher Resource Page - http://www.loc.gov/teachers/
Classroom Materials - http://www.loc.gov/teachers/classroommaterials/
Primary Sources Sets - http://www.loc.gov/teachers/classroommaterials/primarysourcesets/
Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey - https://www.loc.gov/collections/historic-american-buildings-landscapes-and-engineering-records/about-this-collection/
Alexander Graham Bell Family Papers at the Library of Congress - https://www.loc.gov/collections/alexander-graham-bell-papers/about-this-collection/
Resources from the Science Reference Division (research guides, everyday mysteries, etc.) - http://www.loc.gov/rr/scitech/
Teaching with Primary Sources Network has a STEM Group - https://tpsteachersnetwork.org//
Congressional information https://www.congress.gov/
Remember each item you find in the Library's resources has a citation tool towards the bottom of the page.