There are many wonderful educational websites out there.  Here are just a few... If a website has a $ symbol next to it, you will have to register and pay a monthly charge.
    Spelling City
    www.spellingcity.com - great to practice spelling words in a fun and interactive way.
     ABC Mouse
    www.abcmouse.com  - $- all concepts can be practiced
    Rainforest Math 
    www.rainforestmath.com - fun for math concepts
     I Know That
    www.iknowthat,com - $- all concepts can be practiced- some games are free
    www.raz-kids.com - great for reading practice
    The website below is for parents interested in learning about the Common Core State Standards:
    Engage NY
    www.engageny.org - this site gives you a detailed description of the common core and the curriculum