The concept of function is central in mathematics and grows in importance as one progresses in depth and breadth of understanding mathematics. Results from national assessment progress reports indicate that the majority of students do not comprehend the concepts of function and graphing. Technology has the potential to improve the understanding of functions and graphs. With the use of a Calculator-Based Laboratory system (CBL) and a graphing calculator, students are able to physically observe a functional relationship between two variables and observe a graphical representation of that relationship as a scatterplot. Several CBL mathematics experiments are presented as examples of the improvements in concept development possible with the use of calculator-based graphing. Contains 23 references. (ASK)