My county uses LearnZillion to help give additional instruction to students. My group was focusing on Counting to 20. This specific lesson provides activities for counting to 20. This helps close the gap by giving support to students that need extra help with counting to 20.

This site provides courses for parents to prepare their children for school. There are lessons on content areas as well as to prepare for independent activities with independence time.

Free DreamBox K-8 math virtual manipulatives to use with any whiteboard bring math to life for students in large-or-small group instructional settings. This is a subscription based product the provides individualized activities for students. If your school doesn't have a subscription this site provides free teacher tools. It allows students to work on skills based on their level not the level of the class.