Developing Grade 11 Students’ Learning Achievement in Mathematical Topic of Complex Number Basing on Constructivist Theory with a Focus on Analytical Thinking

Abstract

         The objectives of this research were to: 1) develop mathematics learning achievement on Complex Number topic for grade 11 students to have learning achievement at least 70% or more and at least 70% of all students passed the criteria and 2) develop analytical thinking skills of grade 11 students who had learnt Complex Number topic based on Constructivist theory to have a mean score of 70% or more and at least 70% of all students passed the criteria.

              The target group consisted of 44 grade 11 student from Classroom Number 5/1 who  were studying in the second semester of the academic year 2017 at Nongrua Wittaya School under The office of secondary Educational service Area 25. The students were selected using a purposive sampling. This student was an action research consisted of 3 operational cycles. There were three types of the research instrument consisted of: 1) experimental tools including 12 mathematics lesson plans, 2) reflection tools including a student learning behavior form, a learning activity recording form, end-of-cycle quizzes, activity sheets and exercise sheets and 3) learning management effectiveness evaluation tools including a learning achievement test with 20 multiple-choice questions and analytical thinking skills subjective test with 4 essay questions. Both the collected quantitative and qualitative data were analyzed using mean, standard deviation and percentage.

              The findings showed that :

              1) the average mean score on learning achievement of all students was 15.19 or 79.55%, and there were 38 students who passed the criterion or 86.36% of the whole students group which was in line with the prescribed criterion; and

            2)  the average mean score on analytical thinking skills of the students was 15.52 or 77.61%, and there were 36 students or 81.82% of the whole students group passed the criterion which was in line with the prescribed criterion.