In this manual topics related to energy, energy efficiency, and renewable energy sources will be explained. It is designed for primary school teachers. They will have the opportunity to bring the issues given to students through interesting theoretical and practical examples. The theoretical lectures and practical exercises of this manual can be conducted in classes related to natural sciences. The theoretical lectures and practical exercises are composed of interesting information about the given topics, and also represent an addition to the topics that are processed in classes related to natural sciences. The practical parts are composed of four exercises, where, in an interesting and creative ways, students will have the opportunity to directly see and explore the different types of renewable energy sources.