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The purposes of this study were 1) to design and develop a package of instructional activities on conic sections by using TI–Nspire CX CAS graphing calculator for Matthayom 4 students in order to attain the efficiency criterion of 75/75 and 2) to study the students’ achievement and satisfaction. Samples of this research was conducted during the second semester of the 2018 academic year. A group of 25 Matthayom 4 students were selected by a cluster random sampling approach as the experiment group. The package was created to teach for a total of 12 periods. The researcher taught the subjects according to the lesson plans on the package. Students’ responses on exams during the experiment and on the achievement test at the end were collected for evaluating the students’ learning on conic sections. The pupils, as well, were asked to fill in a questionnaire about their satisfaction toward the package on conic section by using a TI–Nspire CX CAS graphing calculator for Matthayom 4 students.
The results of this study were as follows: 1) The efficiency of the instructional-activities package on conic sections by using TI-Nspire CX CAS graphing calculator for Matthayom 4 students was 82.2/78.17 and 2) More than 60% of the participants scored more than the set criterion of 60 at the .01 level of significance and the mean score of the subjects’ satisfaction toward the instructional-activities package was overall at a ‘high’ level.
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