The prefix over- usually has the meaning of 'too much' when it is added to a verb. For example:
He overcharged me for those crisps. That's not fair!
Sometimes, however, it is not so obvious. To oversee does not mean to see too much, but to supervise or keep a watch over something.
The warehouse manager's job is to oversee the workers.
In this worksheet you will be looking at words where the prefix over- may mean different things. You might find a dictionary helpful.