Harry Potter - Coloring Squared Math Concept Books Coloring Squared: Addition and Subtraction Coloring Squared: Multiplication and Division Coloring Squared: Color by Number Coloring Squared: Number Sense 1-999 Coloring Squared: Fractions, Decimals, and Percentages Grade Level Books Coloring Squared: Kindergarten Coloring Squared: First Grade Coloring Squared: Second Grade