HammerMath is an engaging, mathematics curriculum designed to teach fractions, measurement, and scaling concepts. At the core of the curriculum is The Big Inch. The Big Inch (U.S. Patent #7,632,099 and #8,070,493) is the only math manipulative that combines measurement and fractions allowing students to physically apply the algorithms of fractions. 

The Big Inch is designed for students to physically create their own fraction problems. This unique methodology of combining color and number helps students gain true understanding about the physical space connected to numbers, patterns, and measurement while simultaneously developing pre-algebraic thinking.