Refraction is the property of light that causes it to change speed and bend as it passes from one medium to another. The degree to which the light bends or refracts depends on the index of refraction of the two media according to Snell’s Law. In this hands on lab experiment, students pass a laser beam through a hollow prism filled with water containing various known concentrations of sugar to measure and calculate the indices of refraction of each solution. Finally students use the data they collected and calculated to estimate the sugar content of an unknown solution.