My students determined a problem and solve it using robotic technologies. I presented renewable energy resources to the students. I used a web page https://goo.gl/RmHNp2 and asked students to design a model which will use a windmill or a solar battery to produce energy. Students designed models and presented them in a class. Students thought how they can produce energy.
Our activities: https://youtu.be/lFt9BD5EXvM