Basic addition and subtraction facts using numbers 1-10. Children complete basic addition and subtraction problems and corresponding code to color and reveal hidden code. We use these in our class for practice of addition and subtraction in a fun, self guided mode. It's a self propelled math center. Math skills and fine motor co-ordination are developed. Amy's Math Puzzles are a fun way to promote literacy and math skills. In our classroom we also personalize a math puzzle to each child's initials. The children get to pick and personalize the math puzzle with their own color choice. Math puzzle hidden word puzzles are new and fresh with each puzzle.