Logic & Critical Thinking
The Logic Zone Kids Korner-Logic problems for kids, but you may also link to more challenging activities
The Kidz Page Here are some great games that will give your brain a work-out!
Conceptis Puzzles logic puzzles, including pixel puzzles, dot-to-dots, Sudoku, Kakuro, Battleship, and more
Mystery Master Logic Puzzles traditional logic puzzles, with printable solving grids
|Simon Tatham's Portable Puzzle Collection a collection of small computer programs for one-player puzzle games (PC, Unix, Mac)|