Lexile.com - Lexiles are used to determine the reading level of different books. Use this website to find the Lexile of tons of books!
https://www.arcademics.com/ - a fun website where you can play games that are good math practice (they also have Language Arts games). You can play without an account.
https://www.khanacademy.org/math/cc-2nd-grade-math - Need a little extra support or looking for enrichment with math? Khan Academy has video lessons and practice for all different levels.