At the beginning students were introduced with the project.
After that we had discussion about some global and local problems, after which we have identified pollution as one of those problems.
Students have then, after some discussion, came to conclusion that one of the major polluter today is plastic - that is people use a lot of plastic, and by throwing it away they greatly pollute the environment.
They were then given the assignment to make a presentation/ video about plastic and pollution.
Here is their work: