Learning tool development of guided inquiry based to reduce of student’s mistake in resolving question on cell division concept

This study aims to produce learning tools using the guided inquiry model which is reasonable to reduce misconception in students’ class XII for solving problems ability on the cell division concept. This development research refers to Borg and Gall development which was modified. The collected data were analyzed qualitatively and quantitatively. Validity data using content validity ratio formula by Lickert Scale. Data of learning feasibility, students’ activities, and student responses conducted on observations. Data obtained from pre and posttest which are used to assess student learning outcomes, were analyzed using the normalized gain formula. The results of the study showed that learning tools (lesson plan and worksheet) are developed showed on minimum valid criteria. Practicality aspect of developed learning tools show good criteria was observed from the learning feasibility, students’ activities and responses. The effectiveness aspect showed high criteria based on N-gain was observed from students’ learning outcomes. This result shows that learning tools are developed qualify on validity, practicality, and effectiveness aspect and can use to measure learning quality to reduce students’ mistake in solving problems ability in the concept of cell division.