Organize your data. Collect all your notes and observations from the experiment as well as charts and graphs of the final results.
Write bullet points on note cards to help you arrange your thoughts. Summarize the experiment, the methodology you used and the results. Explain whether the results varied significantly from what you expected. If they did, include any ideas you might have as to why they varied and what those results might imply for understanding the principle you tested.
Arrange the note cards in a logical manner. Keep all of the summary notes, such as those about methodology and the overview of the results, at the beginning.
Write your interpretation of results from the note cards. Follow the order of the cards to help you structure your report. Determine how many paragraphs are necessary based on the amount of information the note cards contain. Connect the bullet points with supporting details and transitional sentences.