The observation is done first so that you know how you want to go about your research. The hypothesis is the answer you think you'll find. The prediction is your specific belief about the scientific idea: If my hypothesis is true, then I predict we will discover..... The experiment is the tool that you invent to answer the question, and the conclusion is the answer that the experiment gives. Don't worry, it isn't that complicated. Let's look at each one of these points individually so that you can understand the tools that scientists use when doing their own science projects and use them for your project.