Development of the science learning tools for junior high school based on group investigation with skill process approach in heat and the movement learning materials

Abstract

Good learning device can develop thinking ability and motivation of the students in understanding the facts, concepts, principles, and procedures. One of the learning tools that support these objectives is a model group investigation with Process Skills Approach. This study aims to develop devices based science teaching junior high school learning model with the model group investigation science process skills approach to material heat and displacement with valid criteria, practical and effective in learning. This type of research is the development of research. Development model used is the model 4-D comprising the steps define, design, development and desseminate. Product trials conducted in the classroom SMPN 7 Sijunjung VII.1 and the proliferation of devices is done in class VII.4 SMPN 7. The instrument consisted of a sheet of validation and observation sheet. Type of data collected activity and student learning outcomes. The collected data were analyzed descriptively. Based on the results obtained define phase learning device development needs. Results obtained at the design stage prototype learning device that consists of a syllabus, lesson plans, handouts, student work sheet and assessment sheets for heat and displacement of material designed according to the steps of learning model group investigation with the approach of science process skills. The development phase obtained validity value of 91%, the value of the practicalities of 83.3% and a value of 86.4% effectiveness. At the desseminate stage, learning devices are obtained with a practical value of 85.4% and the effectiveness of learning devices is 85% when distributed in other classes.