I did a few experiments with X but chose to post this one. He did the experiment from the procedures stated and he was confident to carry it out.
However, he had forgotten most of the concepts about the water cycle, so did some lesson teaching and tested him on it. His memory is good and I hope he can retain what he has learnt in the long run.
His less than 5 minutes cramming learning. Not bad but need to revise abit more.