Aim: What you are trying to get out of the experiment.
Hypothesis: Your prediction on what will happen in the experiment.
Method: The steps you take to perform the experiment.
Results: The outcome of your investigation
Conclusion: Your thoughts on what happened and why and if your hypothesis was correct or not.
Discussion: The reasoning behind your results and your thoughts about them. The trend of your results.
Keywords
Independent variable-The independent variable is the thing you change.
Dependent variable-The dependent variable is the thing you measure.
Controlled variable-The controlled variable is the variable(s) you keep the same.
Fair test-A test where all but one variable is controlled.
Reliability-Using multiple tests to consistently get the same result.
Accuracy-Making sure to reduce as much error as possible. e.g. Parralax error and zero error.