Jigsaw puzzles: http://www.thekidzpage.com/onlinejigsawpuzzles/
Crossword Puzzles: http://www.abcteach.com/wordpuzzles/OnlineCrossMenu.htm
(How to play:Just move your mouse to the square you want and type the letter in the box, continue to write entire word. If you need to change it go back to the square and retype a new letter. You can click the CHECK button anytime to check your answers. When it says you are finished, Click the CHECK button on the top of the page. If you made a mistake it will take away the letter and you can try again.)
Site with several puzzles: http://thinks.com/
(How to play: Explore the rooms of the Cryptic Manor to find hidden links to the puzzles. The site contains both interactive puzzles and ones to print out and work with paper and pencil. We designed the puzzles to be challenging, so you'll need both time and brainpower to work out the solutions. You'll find more information by clicking on the yellow buttons on the left under Codey. Happy puzzle solving!
The Fruit game: http://king.2020tech.com/cgi-bin/nim/nim
At the start of the game, you will see four piles of fruit: peaches, oranges, lemons, and bananas. The number of fruit in each pile is different each time you play. After seeing the fruit, you are asked if you want to go first. If you say "no," the computer will go first. During your turn, you may remove (or eat) any number of fruit from one pile. For example, you may take "3 peaches," or "1 lemon"--but never "3 peaches and 1 lemon." You must remove something every turn. You cannot "pass" your turn. To remove a number of fruit, click on any fruit to remove it as well as all the fruit to the right of it. (See below diagram.) vi. The object is to take the last fruit from the table.
Fun Puzzles: http://www.vtaide.com/png/puzzles.htm
How to play: Click and drag the sticks (or numbers or puzzle pieces) to solve the puzzles. Please note that there may be more than one solution to each puzzle. If you really have difficulties solving the puzzles ... don't get mad, get help. But nothing beats solving the puzzles by your own efforts. You may even discover a new solution to a puzzle.
Connect Four: http://www.allmixedup.com/connect/connect.cgi?render=1
Connect the dots: http://www.EnchantedLearning.com/Connectthedots.html