<![CDATA[This study aims to determine whether the Guided Discovery learning model can improve conceptual understanding and critical thinking skills of seventh-grade students at SMP Negeri 2 Gebang. The research employed classroom action research with 32 students of grade VII as the subjects. The instruments used were tests and observations. Based on the reflection of Cycle I, improvements were implemented in Cycle II. The average score of teacher observation in Cycle I was 3.0 and increased to 3.5 in Cycle II, categorized as very good. Meanwhile, the average score of student observation in Cycle I was 63.75% (active category) and increased to 66.875% in Cycle II. Classical learning mastery for conceptual understanding in Cycle I was 12.5%, which increased to 80% in Cycle II. Individual learning mastery in Cycle I showed that only 16 students achieved scores ≥70 in conceptual understanding and 16 students in critical thinking skills. In Cycle II, this number increased to 28 students for conceptual understanding and 29 students for critical thinking skills who achieved scores ≥70. Based on the results of Cycle I and Cycle II, it can be concluded that the Guided Discovery learning model improves students’ conceptual understanding and critical thinking skills in mathematics for seventh-grade students at SMP Negeri 2 Gebang..]]>
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