This is THE website I consider to count as your 20 minutes of reading after school, even if you are 'doing' other subjects.  Since you must read in math, it will be excellent practice and you can use it at home with the sound on!  I alreay have your passwords in the classroom. 

If you have time using a chromebook in the classroom, you will be able to complete four activites (for free) a day.  If you are looking for a site to subscribe to, I highly reccommed this site.  In the past we had free access all day and I would use if FAR more frequently. 

Parents can create an accoun/become a member of the web site.