Enhancing Critical Thinking and Mathematical Achievement Through Problem-Based-Learning: A Classroom Action Research at SMKN 6 Surabaya

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Significant improvement in cognitive learning outcomes was observed, with average scores increasing widely across both cycles.
In the basic cognitive domain, the average score rose from 73.71 to 75.9, while critical thinking skills showed a jump from 40.09 to 61.4.
The study involved 40 students over three months, utilizing problem-based learning as the primary method for instruction and assessment.
These results suggest that structured assignments and exercises in PBL can enhance both critical thinking and math skills in a classroom setting.

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Classroom action research improved critical thinking and mathematical achievement in vocational high school students, indicating PBL's effectiveness.

Mahani et al. (2025) studied this question.

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Classroom action research improved critical thinking and mathematical achievement in vocational high school students, indicating PBL's effectiveness.