<![CDATA[Conceptual understanding plays a crucial role in the success of science learning, particularly regarding the topics of temperature and heat. Low levels of conceptual understanding must be identified using appropriate instruments. This study aims to analyze students’ levels of conceptual understanding using the Five-Tier Diagnostic Test. The study employed a quantitative approach using a survey method. The study population consisted of 80 seventh-grade students at a private junior high school in Sidoarjo Regency, with a sample of 80 students selected using saturated sampling. The research instrument was the Five-Tier Diagnostic Test, comprising 20 items. Based on the research results, it was found that the percentage of students in the “Conceptual Understanding” category was 14.69%, indicating that students’ level of conceptual understanding of temperature and heat remains in the “very poor” category. It is hoped that these findings will serve as a basis for teachers in determining appropriate teaching strategies and learning media to improve students’ conceptual understanding of temperature and heat.]]>
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