Question/purpose, hypothesis ,in the middle data and graphs and pictures, on the other side results and conclusion.
Chat with our AI personalities
Do nothing
You should include some of your results, how you felt about the results and maybe what you would do differently if you were to do the project again.
pictures of you and the project and don't forget to include your name and your teachers name and the date it was made
It may very from fair to fair but some common things include an explanation of what you did your experiment, why it happened (the science behind it), and practical applications.
any size you want, it depends on how much you are doing for your project