Effectiveness of Inquiry Learning Model on Critical Thinking Skills of Class IV Students in Natural Sciences Alternative Energy Material in Elementary School

The purpose of this study was to find out 1. Knowing students' critical thinking skills using the fourth grade inquiry learning model of elementary school. 2. To find out the activities of students in the learning process by using the fourth grade inquiry learning model of elementary school. 3. To find out the response of students by using the fourth grade inquiry learning model of elementary school. The method and design in this study were pre-experimental desings and one group pretest posttest desings. The results showed that the signifikan inquiry learning was significantly effective in increasing students' critical thinking skills. This is evidenced by the results of the t-test obtained by tcount (8.525)> t table (2.056) and the average value of students' critical thinking tests increased from the average value of pretest 61.3 after receiving treatment posttest 77 average value, 73. The inquiry learning model also makes students active. Using the inquiry model students respond well. This is evidenced by the response sheet of students who get a percentage of 83.9%. In the learning process using inquiry learning models are categorized very well in the implementation of natural sciences learning alternative energy materials and make critical thinking students get a percentage of 100% while the value of achievement generated from learning uses the inquiry model that is 96,739. Keywords: models of inquiry learning, critical thinking, effectiveness. DOI: 10.7176/RHSS/9-11-05 Publication date:June 30th 201