The purpose of this study was to determine the effectiveness of computer-assisted instruction (CAI) versus traditional method of instruction on Differential calculus, a chapter of higher secondary mathematics. The students in the control groups were taught the concepts of Differential calculus in their original classes, while the students in experimental groups were instructed in a computer lab. Experimental group students utilized CAI package which contains sound, animation and self-examination, allowed students to navigate and self-explore themselves. A quasi-experimental design with control and experimental groups and pre- and post-test was utilized. 180 students were selected using purposive sampling techniques from three types of government higher secondary schools in Coimbatore. Research instrument was Mathematics achievement test (MAT). A Personal information questionnaire was used to make a profile of student’s demographic, Mathematics attitude scale was used as a tool prepared by the researcher to analyze the attitude of students towards mathematics. . Data analyzed using mean, S.D. Independent “t’ test, paired “t” test, ANOVA and Chi-square test. The analysis revealed that there was statistically significant difference between the students’ achievement in the control and experimental groups. The result explains that teachers could use computer-assisted instruction software as a useful supplemental tool. Further research is recommended to examine effectiveness of computer-assisted instruction for other chapters of mathematics at higher secondary level.
Keywords: Computer Assisted Instruction, Traditional teaching, Achievement test, Mathematics attitude scale.
 Research Scholar, Department of Educational Technology, Bharathiar University, Coimbatore, Tamil Nadu, India
 Associate Professor, Department of Educational Technology, Bharathiar University, Coimbatore, Tamil Nadu, India.