Journal of Learning Improvement and Lesson Study
Vol. 6 No. 1 (2026): JLILS (June Edition)

Can Inquiry-Based Learning Effectively Improve Vocational High School Students’ Critical Thinking and Conceptual Understanding?

Ghanifa Khoirul Khasanah (Universitas Negeri Yogyakarta)
Nurhening Yuniarti (Universitas Negeri Yogyakarta)
Irdayanti Binti Mat Nashir (Universiti Pendidikan Sultan Idris)



Article Info

Publish Date
23 Jun 2026

Abstract

Modern industrial demands require vocational students to possess high-level analytical skills, making existing conceptual gaps in fundamental engineering laws a critical challenge. This study evaluates Inquiry-Based Learning in improving critical thinking and conceptual understanding of Ohms Law. While the Wilcoxon Signed-Rank Test measures within-group shifts, this quasi-experimental study utilizes a two-stage cluster random sampling technique and applies the Mann-Whitney test to compare cross-group gains among seventy-two participants. Data gathered via multiple-choice and analytical essay instruments revealed significant post-intervention gains favoring the inquiry class, further validated by a large experimental effect size value of minus zero point five rather than a solitary probability metric. Structured scientific inquiry effectively bridges abstract electrical theory with robust diagnostic competencies, prompting researchers to reconsider how statistical gain comparisons can definitively reshape traditional, lecture-based regimes in technical education

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Journal Info

Abbrev

jlils

Publisher

Subject

Education Other

Description

The aim of this journal is to publish articles dedicated to all aspects of the latest outstanding developments in the field of learning improvement and lesson study. Its scope sections include research and learning development for multi-disciplines in pre-elementary, elementary, junior, senior high ...