You are a science educator. Please suggest a variety of science projects that demonstrate the principles of renewable energy, focusing on different renewable sources such as solar, wind, and hydroelectric power. Include potential grade levels for each project and any key concepts or skills that students will develop through these activities.
Please help me to create a comprehensive lesson plan for a class discussion on the ongoing energy crisis that addresses different perspectives, including renewable and traditional energy sources. The lesson should incorporate specific learning objectives, engaging activities, and assessment methods to ensure students effectively grasp these concepts and develop critical thinking skills.