DEVELOPMENT OF PROBLEM – SOLVING ABILITY IN MATHEMATICAL FOR MATHAYOMSUKSA 4, USING INQUIRY BASED LEARNING AND COOPERATIVE PROBLEM SOLVING LEARNING PACKAGE PROBABILITY

Abstract

            This research of the action research approach. The purpose of the study was to improve mathematical problem – solving skills of grade – 10 students using inquiry – based learning and cooperative problem – solving learning package so that the students gained a learning achievement mean score in the topic of probability of 70% of the total score. The sample group consisted of 18 grade  – 10 students from classroom no. 4/2, semester 2/2020, Phadung Naree School, Muang district, Maha Sarakham; they were selected through purposive sampling using a mathematical problem – solving test as a sampling unit. The instruments used in the study included 1) 3 sets of a 4 – choice mathematical problem – solving test, 2) a mathematical problem – solving behavior observation form and 3) 10 lesson plans on probability. The collected data were analyzed using arithmetic mean, standard deviation, and percentage. Findings: After implementing inquiry – based learning and using the cooperative problem – solving learning package, in the first spiral, some of the students displayed a lack of basic knowledge required to perform learning activities; the mean score was 62.04%. In the second spiral, students were accustomed to the learning approach, however, they were imprudent and did not pay attention to the activities; the mean score was 68.06%. Lastly, in the third spiral, students were more accustomed to the learning approach and paid more attention to the activities; the mean score was 78.47% which passed the criteria set of 70% from the total score.