AN CLASSROOM ACTION RESEARCH FOR PROMOTE ABILITIES IN GEOMETRIC PROOF OF GRADE 8 STUDENTS BY USING THE FIVE PRACTICES
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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
บทความทุกเรื่องได้รับการตรวจความถูกต้องทางวิชาการโดยผู้ทรงคุณวุฒิ ทรรศนะและข้อคิดเห็นในบทความวารสารบัณฑิตศึกษา มหาวิทยาลัยราชภัฏวไลยอลงกรณ์ ในพระบรมราชูปถัมภ์ มิใช่เป็นทรรศนะและความคิดของผู้จัดทำจึงมิใช่ความรับผิดชอบของบัณฑิตวิทยาลัย มหาวิทยาลัยราชภัฏวไลยอลงกรณ์ ในพระบรมราชูปถัมภ์ กองบรรณาธิการไม่สงวนสิทธิ์การคัดลอก แต่ให้อ้างอิงแหล่งที่มา
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