AN CLASSROOM ACTION RESEARCH FOR PROMOTE ABILITIES IN GEOMETRIC PROOF OF GRADE 8 STUDENTS BY USING THE FIVE PRACTICES

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Suphanan Thongpraphai
Natcha Kamol

Abstract

        This classroom action research was aimed to promote abilities in geometric proof by using the Five Practices to design and organize learning activities. The target group consisted of 42 grade 8 students at Chiang Mai University Demonstration School. They were chosen by purposive sampling. The research instruments included 9 lesson plans, post-instruction notes, worksheets, and 9 items subjective test on the student’s abilities in geometric proof that showed the discrimination ranged from 0.23 to 0.86, the difficulty ranged from 0.21 to 0.54 and the reliability was 0.93. The research was conducted along the 4 steps of continuous 3 cycles of classroom action research (PAOR) composed of Plan, Act, Observe and Reflect that used the Five Practices.


       The findings reveal that the most students had geometric proof abilities from good level up to very good level, 64.29%. In which students were able to demonstrate geometric proof by referring to the definitions, axioms, and geometric theorems mostly correct and all.

Article Details

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Research Article

References

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