This is some of the best free browser game collections I've seen. There are all sorts of Math games and Logic based games from 1st grade and above. Here are few categories

• Visual math tools
• Hidden math concepts
• Brain workouts
• Classic games & puzzles
• Math games with story
• Money & general math knowledge

Basically it's really awesome and there is another bonus. You get access to a collection of videos explaining various math concepts I've spent a lot of time after discovering this site and I've had a great deal of fun and engagement with the site.

It's Kd Safe

There re many compliance requirements to get the above seal. So parents can leave kids on the siit with less stress and supervision.

Have Fun - Get Smart :)