BrainBashers has hundreds of free brain teasers, puzzles, optical illusions, riddles and games to wile away the hours this summer, while not letting your child's brain turn to oatmeal. Trust me, your child's teacher will appreciate it, and your child will have a blast on this webpage. It is safe for kids, with no questionable content or pop ups. I use it at school (7th grade) with confidence, and the kids love it. You will enjoy it too!