"ReadWorks provides over 1,400 K-8 non-fiction and literary reading passages, each with a research-based question set to support student comprehension." Passages can be sorted by grade level, lexile level or skill/strategy
Use this site to create online voice recordings. This is a perfect way to get content from your students without them having to always write information down. They can talk, sing, or even par their comprehension of the content and save their file and send it to you to grade later.