This is a guided activity that encourages pupils to produce sentences first and then to make a short speech by adding also extra info recalled from their own experience. Kids watch the video at home and do little research. At school they work in small groups.
This is a different way to practice English grammar points. The level of kids is A2 -B1 of European Framework.
While watching the video you can pause as needed, producing sentences either orally or in written form. Then you can make a short speech talking about environmental issues.