The Development of Learning Package with the Problem-Solving Process of Krulik and Rudnick Model to Enhance the Ability to Solve Physics Problems for Mattayomseuksa 5 Students

Abstract

             This research aims to 1) develop a learning activity set for physics lessons on static electricity using the process of Krulik and Rudnick with an efficiency (E₁/E₂) of 80/80 ± 2.50 and an efficiency index (E.I.) of 0.50 or higher according to the specified standard criteria, 2) compare students’ academic achievement before and after the implementation of the aforementioned activity set, 3) compare students’ ability to solve problems before and after the implementation of the aforementioned activity set, and 4) study students’ satisfaction with the learning management in which the learning activity set was used. Selected by the cluster random sampling method, the sample group consisted of 20 secondary school students in the 2^nd semester of the 2024 academic year at Thachangwitthayakhan School. The research instruments consisted of 1) 4 learning management plans, 2) 4 learning activity sets, 3) a 30-question achievement test, 4) a 10-question problem-solving test, and 5) a 15-question satisfaction questionnaire. Data were analyzed by finding the mean, percentage, standard deviation and efficiency, effectiveness index, and t-test.
             The research results revealed that:
             1. The learning activity set for physics lessons on static electricity using the process of Krulik and Rudnick has an efficiency (E₁/E₂) equal to 80.58/79.67 and an efficiency index (E.I.) equivalent to 0.68, which is in accordance with the standard criteria.
             2. The academic achievement after the implementation of the aforementioned activity set is higher than that before the implementation with statistical significance at the .01 level.
             3. The ability to solve problems in physics lessons after the implementation is higher than that before the implementation with statistical significance at the .01 level.
             4. The students’ satisfaction with the learning management in which the learning activity set with the process of Krulik and Rudnick was used has an average score of 4.58 at the highest level.