We provide mainly elementary school students in the vicinity of refineries, complexes and plants with lectures at school to deepen their understanding of climate change and other issues caused by global warming. With the aim of encouraging children to know that the issues are not problems in the distant future but immediate problems to them, we provide them with classes of experiments, handicrafts, and quizzes for hints and tips on energy-saving, so that they can find opportunities to practice global warming countermeasures in their daily lives.