The effectiveness of the combined of inquiry and experimental learning models on student cognitive learning outcomes about the properties of light

Experimentation Method is one method that is widely used in learning Science because the main purpose of this method is to find the truth of the data/facts that can be observed or obtained. The inquiry learning model is a widely recommended method because it encourages students to solve problems independently. The research is research and development. The data is study include qualitative and quantitative data. The research instrument used was a validation sheet, a teacher's evaluation sheet, a student's evaluation sheet, an observation sheet for the implementation of learning, a test of learning outcomes, and a questionnaire for student learning independence. The implementation of the learning process on material changes in the form of objects observed by the observer, namely the class teacher using the observation sheet of the implementation of the learning process and student responses in using the inquiry learning model combined with experiment using a questionnaire sheet. Student learning outcomes or evaluations use the test method with the One Group Pre-test Post-test Design model to determine the extent to which student learning outcomes before and after being given a joint inquiry learning model and then use the average value formula (M), the calculated value (t-test), and table values. The results of the inquiry learning model combined with the experiment were shown by evaluating an average score of validity of 85.05% (very valid), an average of practicality of 94.4% (very practical), and effective in improving student learning outcomes. So, the inquiry learning model combined with science learning experiments is very feasible in terms of valid, practical, and effective.