Oswego City School District has put together this site that provides practice in addition, subtraction, multiplication, division. Rec by the Two Sisters
I copied the Fractionator game from the website link above. it seems to be a relatively new website. Not a lot of stuff on it but good games. Also lists a multiplication game. From Heather Johnson
I found this website that has multiple activities with fractions. It includes the materials needed for the activities and instructions. It lists extensions and assessment ideas. It also has a listing of books about fractions. It even contains links to other websites where students can play fraction games. (And I only had trouble accessing one of the links.) From Heather Johnson