Development of Supplementary Material to Enhance the Graph Interpretation Skills of Students

The main objective of this study is to develop a supplementary material to enhance the graph interpretation skills of students. It attempted to answer the following questions: (1) What are the common difficulties of students in interpreting kinematics graphs? (2) What is the acceptability rating of experts as regards the supplementary material? (3) Is there a significant difference between the pretest and posttest scores of the control group and of the experimental group; and (4) Is there a significant difference between the change scores of the control and experimental groups?