Our natural resources are decreasing day by day due to the increase in world population and changing consumption habits. Therefore, it is necessary to use natural resources efficiently by reducing consumption and recycling recyclable wastes. Recycling protects both nature and resources. The most important initiative we can make for a more livable future is to teach our children recycling. In our project, recycling activities will be carried out with 3R principle and STEM method. The basic ideas of the 3R principle are: - Reduce, Reuse, Recycle. The aim of our project is to enable our preschool students to make designs with STEM method from recycling materials based on 3R principle. In this project, it is aimed to introduce our students to STEM education and to gain analytical thinking, questioning and creative thinking skills from 21st century skills at an early age.