THE Development of Learning Outcomes on the Probability of Events for Grade 11 Students Through Inquiry-Based Learning Integrated with Real-Life Problem Situations Using a Scientific Calculator
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Abstract
This classroom action research aimed to (1) examine the learning outcomes on the probability of events among Grade 11 students in terms of knowledge (K), skills and processes (P), and desirable characteristics (A) after receiving instruction through the 5E inquiry-based learning model integrated with real-life problem situations using a scientific calculator; (2) examine the key competencies of Grade 11 students who received this instruction; and (3) examine students’ confidence in applying knowledge of combinations and probability after receiving this instruction. The target group consisted of 29 Grade 11 students (Room 5/13, SMEP Program) at Pathumthep Wittayakarn School during the second semester of the 2025 academic year. The research instruments comprised five lesson plans based on the 5E inquiry model integrated with the Flipped Classroom approach and active learning, implemented through five role cards, the SME Mission Task worksheet, the CEO Strategic Report worksheet, the SME Mission Box simulation, and a self-assessment form administered via Google Forms. Data were analyzed using mean, percentage, and standard deviation. The results showed that students passed the set criteria in all three domains at 100 percent, with an average knowledge score of 95.86 percent. Both the skills-and-process domain and the desirable-characteristics domain were rated “good” or above. Students’ key competencies were rated “very good,” and their overall confidence in applying the knowledge was at a high level (M = 4.10, S.D. = 0.94).
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