EFFECTIVENESS OF TEXTBOOK WITH BRAIN-BASED LEARNING APPROACH ACCOMPANIED BY MIND MAPPING OF EARTH LAYER MATERIAL TO IMPROVE LEARNING OUTCOMES CRITICAL THINKING JUNIOR HIGH SCHOOL STUDENTS

One of the 21st-century skills targeted in implementing the 2013 curriculum is critical thinking skills. However, the facts in junior high school students critical thinking skills are still low. An exciting and fun media is needed to improve critical thinking skills, namely a textbook with a brain-based learning approach using mind mapping. This study aims to determine the textbooks effectiveness with a brain-based learning approach accompanied by mind mapping for critical thinking. The design of the research used was one group pretest-posttest design with three meetings. The results showed an increase in learning outcomes and critical thinking skills. The results can be seen from the N-gain value of the first meeting is 0.56, with medium criteria. The second meeting is 0.58, with the medium criteria, and the third meeting is 0.65, with the medium criteria.The mean result of critical thinking from the first meeting to the third meeting were 72.57, 76.57, and 80.29 with good criteria. So it can be concluded that textbooks with a brain-based learning approach effectively improve learning outcomes and criticalthinking.