Digital, interactive presentation, with included games for self-testing.Topics: What is energy?, How is energy produced - 4 sources of natural energy are examined. Types of energy - electricity is discussed in more detail, 4 ways of obtaining electricity are illustrated. Battery as an energy source. Energy of motion. Thermal energy - what are heat sources and what are heat retainers. How to save electricity? How to save heat energy?The presentation has a lot of visual illustrations - pictures, v