Useful note taking is really good to look it over during test and to study.
Explanation:
Good note taking should neat so you can read, for example if your stuck on something during a quiz you can see how to do it. It wont exactly give you an answer
The independent variable is temperature since it is the variable that is changed or controlled while the dependent variable ( test score of students) is the variable which is tested and measured as a result of the change in temperature