Science, Tech, Math › Science 5 Types of Science Fair Projects What Type of Science Project Should You Do? Share Flipboard Email Print Science Chemistry Projects & Experiments Basics Chemical Laws Molecules Periodic Table Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated March 01, 2019 There are five main types of science fair projects: experiment, demonstration, research, model, and collection. It's easier to choose a project idea once you've determined what sort of project interests you. 01 of 05 Experiment or Investigation Blend Images/KidStock/Getty Images This is the most common type of science project, where you use the scientific method to propose and test a hypothesis. After you accept or reject the hypothesis, you draw conclusions about what you observed. Example: Determining whether or not a cereal contains the amount of iron per serving listed on the box. 02 of 05 Demonstration Andrew Brookes/Getty Images A demonstration usually involves re-testing an experiment that already has been done by someone else. You can get ideas for this type of project from books and on the internet. Example: Presenting and explaining an oscillating clock chemical reaction. Note that this type of project can be improved if you do the demonstration and then go further, such as by predicting how temperature would affect the rate of the clock reaction. 03 of 05 Research Todd Helmenstine/ThoughtCo. In this science project, you collect information about a certain topic and present your findings. Example: A research project can be an excellent project if you use the data to answer a question. An example would be polling people to ask about their belief in global warming, then drawing conclusions about what the results mean for policy and research. 04 of 05 Model Maxim Bilovitskiy/Wikimedia Commons/CC by SA 4.0 This type of science project involves building a model to illustrate a concept or principle. Example: Yes, one example of a model is the vinegar & baking soda volcano, but you can have an incredible high school or college project by building a model of a new design or a prototype for an invention. In its best form, a project with a model illustrates a new concept. 05 of 05 Collection Blend Images/KidStock/Getty Images This science project often displays a collection to illustrate your understanding of a concept or topic. Example: As with the demonstration, model, and research project, a collection has the potential to be a poor or an exceptional project. Certainly, you could show off your butterfly collection, but that alone wouldn't win you any prizes. Rather, use the butterfly collection to observe how wing lengths of the insects differed from year to year and look into possible explanations for the phenomenon. For instance, discovering a correlation with pesticide use or temperature or precipitation with butterfly populations could have important (scientific) implications.