Do Sudoku Puzzles
If you have a book of Sudoku puzzles then you can use it, but if you don’t, you can find puzzles online. You can even download apps onto any device. Those apps are awesome because you can time yourself and they give you hints.
TurtleDiary
TurtleDiary is an exciting online resource where kids can learn while having fun. They can choose to play games, do puzzles, experiments, coloring sheets, and watch videos on TurtleDiary. All activities are age-appropriate according to which grade your child is in.