Website for Jordan, UT district that includes many aspects of the library program. Includes lesson plans, job descriptions, and many links to actual lessons.
This includes lessons for tech and library activities, K-5. Very comprehensive, if not a bit dated. Just looking at their scope and sequence may be helpful.
Readings with free activities that are lexile-leveled. It is designed for grades K-6, but there are many readings with lexiles scores of 800-1020. Also, it provides lesson plans aligned with various children's books.
You can create a free account. Rec by Karen Ault