其他摘要：สะเต็มศึกษา รูปแบบกิจกรรม 4 WP The purposes of this study were to study STEM learning approach and problem solving using The 4WP format for mathayomsuksa III students, Patumwan Demonstration School, Srinakharinwirot University. The target group of this research were 402 mathayom suksa III students, academic year 2017. Forty-nine students of the specific selection were used as the sample for the STEM learning approach and problem solving using the 4WP format. There were 5 activities, taught in 12 weeks, with 2 periods of 24 periods of 50 minutes each. The data was analyzed by the percentage, mean, standard divation and t-test. The research findings were as follows: 1. The results of the study indicated that the STEM learning approach and problem solving using the 4WP format attained their efficiency as 76.04/73.21. When considering the percentage of average scores from the test scores during each activity, it was found that Activity 1 Spaghetti Bridge, Activity 2 Dropping Eggs Without Breaking, Activity 3 Tower Wood Sticks, Activity 4 Paper Railroad Tracks, Activity 5 Spaghetti Tower had a mean percentage of 70.92, 82.86, 75.92, 86.53 and 70.00, respectively. 2. The students' learning achievement after using the STEM learning approach and problem solving using the 4WP format were 73.21% higher than the criterion 70% at the .05 level. 3. The results of the behavioral evaluation of the group after using the STEM learning approach and problem solving using the 4WP format showed that the working behavior after learning Spaghetti Bridge and Dropping Eggs Without Breaking Activity was good. The working behavior after learning Tower Wood Sticks and Paper Railroad Tracks Activity was very good.
