This easy Sudoku puzzle features the lowercase letters a, b, c, and d! Solve the puzzle by writing each letter only once in each row, column, and block.

Think outside the box! Your child can exercise his logic by figuring out how quickly the mountain goat will get to the top of the hill.

Solve this Thanksgiving Sudoku puzzle by cutting and gluing pictures into the puzzle, with each picture appearing only once in each row, column, and block.

On this kindergarten math worksheet, kids use their logical reasoning and critical thinking skills to solve a Sudoku puzzle with an Independence Day theme.

On this kindergarten math worksheet, kids use their logical reasoning and critical thinking skills to solve a fun Sudoku puzzle with a sports theme.

On this kindergarten math worksheet, kids use their logical reasoning and critical thinking skills to solve a fun Sudoku puzzle with a zoo theme.

On this second grade math worksheet, kids use their logical reasoning and critical thinking skills to help Bart the Bear solve four Sudoku number puzzles.

In this second grade math worksheet, kids use their logical reasoning and critical thinking skills to solve four Sudoku number puzzles.

On this kindergarten math worksheet, kids use their logical reasoning and critical thinking skills to solve a picture Sudoku puzzle with a back to school theme.

Christmas sudoku lets your child exercise his brain while cutting a pasting festive holiday images. Play Christmas sudoku with your child this holiday season.

On this kindergarten math worksheet, kids use their logical reasoning and critical thinking skills to solve a colorful Sudoku puzzle.