Improving Students' Environmental Awareness Using 3R Principles

People's concern toward environmental sustainability is decreasing; it is proven by a large amount of waste that is not handled correctly. The training is needed to accustom every people to manage their garbage at home. The science learning process function in the classroom needs to be maximized by training students to process waste into more useful products. This research aims to improve students' environmental awareness through waste management training according to the 3R principle. This research used a quasi-experiment one-group pretest-posttest design. Data were collected using a questionnaire, observation, and documentation. The total number of samples is 39 students of junior high school, and data analysis uses paired samples t-test, with an error rate of 5%. The result shows that activity for managing waste can be used for organic fertilizer, handicraft, decorative flower made of paper, flower vase, etc. They have a significant influence on students' concern for the environment. This condition indicates that students' environmental awareness by training students to process waste using the 3R principle can reduce excessive household waste production. The 3R principle begins with identifying and sorting waste to the manufacturing process of the product. Student-made products are useful for their use and even for sale.