This action research aims to develop the problem-solving ability and - scientific attitude, using the Problem-based Learning (PBL) in Physics. The target students are 27 students in Matthayomsuksa 5 from Borabuwittayakham School, Mahasarakham, Thailand. The research process is divided into 2 main periods. Each period is consisted of 4 cycles having 4 steps; planning, acting, assessment and learning reflection, one cycle one Physics - problem situation. In order to develop the ability, Various situations, many of objects, and instruments are restricted. The problem must be solved within a limited time. Students in a group, 4 members, have to think and make up their decision how to solve the problem. The problem-solving ability test,3 scoring rubrics, was developed and used during students study. In addition, learning process and learning outcome are present on flip chart of 0.80 x 0.45 square meters, which is used for presentation in front of the classroom. As a result, after the first main period, the planning ability significantly increases from 1.50 to 2.83 on average. Problem - understanding and practice abilities slightly increase from 2.33 to 2.66 and from 1.80 to 2.16, respectively. While, the evaluation and conclusion abilities are unchanged, 1.00 on the average.. Overall, the results indicate that this PBL courses an improvement of the problem - understanding, planning and practicing abilities. However, it is not affect the evaluation and conclusion abilities. This point is the important one to design the instructive activity in the next cycle.
Pramote Rungsri, Mahasarakham University, Thailand
Ritthikrai Chai-ngam, Mahasarakham University, Thailand
Stream: Primary and secondary education
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