These websites contain lesson plans and other types of curriculum resources. These may help you find ideas for activities and tasks to use in your classroom.
These databases will help you find books for your students to read. The eBooks K-8 Collection has the full text of the eBook contained within. The other databases here do not always contain the full text of the book itself. They are meant to help you find books to suggest to your students (as in readers' advisory) or find books you might consider reading with your students as a book study. These sites may also contain lesson plans, book trailers, and other resources to support a book study.
The American Association of School Librarians (AASL) has a list of Best Digital Tools for Teaching and Learning they release each year. A full list of their favorite resources for each year is located on the American Library Association website.