The main objective of this video lesson is to bring the students' attention to the importance of basic and natural sciences in our lives. The lesson will introduce a topic (sustainable energy) that is related mainly to chemistry and is not usually covered directly in a high school curriculum. We hope that this lesson will show students how important and useful the natural and basic sciences are not only for our daily lives, but also for sustainable development. The lesson will present creative and challenging ideas on the topic of alternative energies. It is hoped that students will be inspired by the introduction of these ideas, and that they will develop the confidence to come up with creative ideas themselves. Background for this lesson is based on fundamental concepts in chemistry (mainly), biology, physics and environmental science. The lesson can be completed in a 50-60 minute class and includes 6 segments, with a challenging activity for the students between segments. These activities will take almost half of the time, approximately 20-25 minutes, with the students working in groups of 2-4. The students should discuss the challenging questions and exchange ideas with each other, and be ready for the next segment.

这节视频课的主要目标是让学生对我们生活中的一些基本的自然科学的重要性引起注意。这节课介绍的主题（可持续性资源）主要和化学有关，而且没有直接包括在高中课程里。我们希望这节课能够向学生展示这些基本的自然科学不仅仅对我们的日常生活很重要，而且对可持续发展也很重要。这节课将呈现一些与替代能源这一主题相关的新颖的，挑战性的概念想法。希望学生能够从这些想法中获得一些启发从而培养他们自己想出具有创新性想法的信心。这节课的背景知识建立在化学（主要部分），生物，物理和环境科学。这节课能够在50-60分钟内完成并且包括6个部分，在每一个部分之间会有一个挑战性的学生活动。这些活动的总时间大概占半节课，20-25分钟，学生们将分成2-4个人的小组进行合作。学生们应该互相讨论这些问题并交换彼此的想法，并为下一部分作准备。