has a massive amount of games both just for fun and of educational value. The link I provide takes you straight to a memory game but the site is very easy to navigate. Please bear in mind they do have some advertising but normally you can just skip right
Primary Games covers a wide selection of subjects
How to solve a basic 4×4 KenKen
New math game like Sudoku.
Today's collection of interactive jigsaw puzzles vary from easy to ridiculously difficult: something for every age group and skill level. But, be very careful. They are addictive!
Start with the Daily Jigsaw, or cruise to the gallery for jigsaws organized by topic.
Jigzone is the oldest of today's jigsaw puzzle sites, with a huge inventory of Java puzzles for all levels of play.
In addition to a huge gallery of puzzles, what's unique about JSPuzzles is their leaderboard of solution times.
Just Jigsaw Puzzles is my pick of the day because of the huge variety of options.
These puzzles are perfect for younger kids because with a click of the mouse, you can preview the picture (use Picture Hint) or the shapes of the pieces (use Shape Hint).