Partial Fraction Decomposition | Math Lib Activity Students will practice finding the partial fraction decomposition of rational expressions with this "Math Lib" activity. This activity includes proper, improper, and special case (repeated linear and prime quadratic factors) rational expressions. The answer at each of the 10 stations will give them a piece to a story (who, doing what, with who, where, when, etc.) This is a much more fun approach to multiple choice, and the students adore reading