Miss Star, a fifth-grade math teacher, provided a worksheet to her class with 30 problems on adding fractions and reducing them to the simplest form. Patricia has a learning disability in mathematics. Miss Star required Patricia to complete only the first 10 addition fraction problems without reducing them to the simplest form. The other students in the class were required to complete the entire page of 30 problems and reduce each answer to the simplest form. This is a(n)