Check out these products I can recommend:]
Sudoku For Kids - 120 Printable Sudoku.
120 Printable Sudoku Puzzles For Children - Available For Instant Download.
Sudoku For Kids - 120 Printable Sudoku.
The Ultimate Sudoku Guide.
Learn Solving Strategies And Insider Secrets Of Solving Sudoku Puzzles. Be A Sudoku Pro Within Days.
The Ultimate Sudoku