Modules in Computer Algebra Systems (CAS) make Mathematics interesting and easy to understand. The present study focused on the implementation of the algebraic, tabular (numerical), and graphical approaches used for the construction of the concept of absolute value function in teaching mathematical content knowledge along with Maple 9. The study group consisted of pre-service teachers attending Department of Primary Education Mathematics teaching at a state university. The pretest (open ended questions) achievement and the posttest (open ended questions) achievement of the group were compared based on their answers. It was concluded that CAS was influential on pre-service teachers' usage of the said learning approaches.