Eating breakfast in the morning does help school performance. The hypothesis is that eating breakfast does help.
Independent Variable: Whether one eats breakfast or not
Dependent Variable: School performance
Controlled Variable (Constant): One controlled variable could be the kind of milk that is used (if something is being made that has milk).
Eating breakfast in the morning helps school performance in many ways, most of which include memory, participation, better temperance, and paying more attention to the task at hand.
