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35 Science Fair Projects

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Science Fairs are so much fun for homeschool students. It’s an opportunity for children who love Science to complete a project at home, and show it off with friends and peers who also enjoy experimenting! Here are 35 quick and easy homeschool Science Fair projects that your child can do by themselves!

35 Science Fair Projects that are SUPER cool! So many creative and unique science experiments for kids of all ages covering all sorts of different areas of science for preschool, kindergarten, first grade, 2nd grade, 3rd grade, 4th grade, and 5th grade students.

Science Fair Projects

So your homeschool co-op is hosting a Science Fair and your child wants to participate? How fun! Here are some great Science Fair projects that he or she can complete all by themselves.These are great for children of all ages, and many of them can be adjusted for upper or lower grades, group projects (multiple ages or grades can work together), or individual competition. No matter which one your child chooses, you can be guaranteed the educational experiences in each of these is stellar!

00 Homeschool Science Fair Projects
  1. The first one in this list is obvious – no Science Fair is complete without at least one volcano! They’re always a hit, and never get old.
  2. Kids can learn about floating and sinking, and properties of water with this water balloon science experiment.
  3. You know how apples turn brown once they’re peeled? Teach your child about the oxidation process
    with this practical engineering challenge with apples.
  4. For kids who are passionate about animals, let them explore the biology concept of animal cell structure.
  5. Shrinky Dinks are also a fun way to display what your child has learned about animal cells
    and/or plant cells.
  6. If the Science Fair occurs in the winter, what a perfect time to create
    your own frost
  7. Growing crystals is always a fun one! Don’t neglect the fascinating opportunity to grow your own.
  8. Cracked eggs can make an interesting place to grow crystals – they look like geodes!
  9. Play around with exothermic reactions (it’s not scary) and observe rust forming on steel wool with this
    simple experiment
  10. Kids can observe “anti- gravity” phenomena and experience the Science of air pressure with a
    couple of household objects: a ping-pong ball and a hairdryer.
  11. Children who are learning about human anatomy might enjoy creating a model of the
    human ear
  12. Got a child who loves engineering, physics, and simple machines? Let them design and build a pulley.
  13. Your little engineer might also enjoy learning about mechanical energy with this
    that also involves candy.
  14. Your little scientist who loves electricity will enjoy this
    electronics project
    that gives them experience with circuits and closed loops.
  15. Also interesting to young electricians is this
    electromagnetic train
  16. Harness electricity by creating your own homemade battery.
  17. Astronaut dreams can be fulfilled early by letting your youngster create their own DIY
    planetarium constellation projector
    that displays his/her favorite constellations.
  18. Colors can be separated through a simple science chromatography investigation, that also ends with a pretty flower for

    Science Fair Projects
  19. Candy is always a great hands-on object to use for any project or lesson – including Science Fairs!
    Take some candy, add water, and observe what happens to the artificial colors.
  20. Short on time? This solar light project only takes 5 minutes to set up!
  21. Cohesion, Adhesion, and surface tension are observed in this
    capillary action science experiment
    that only requires cups, paper towels, and food coloring.
  22. Your younger children will love learning about the senses and creating Oobleck to experiment with.
  23. To explore the sense of sight, try this vision science experiment.
  24. Impress your child who is fascinated with weather with this
    experiment that allows him/her to observe how a weather vane works
  25. This really cute “tiny dancer” experiment is a great way to engage your child who loves dance to
    learn about homopolar motors.
  26. Combine Art and Chemistry with a diffusion
    watercolor art project
  27. Your child can make a car out of recycled materials that actually runs. Just use rubber bands to
    “motorize” it!
  28. Motivate your little cook with some practical kitchen Science – make butter!
  29. With your help, your kitchen expert can learn about casein and make “plastic” out of milk.
  30. Playdough is the perfect thing to use to create a model of the inside of the earth.
  31. Leaves change color every fall, and your child can use this
    to learn and display how it happens.
  32. Carbonation in sodas can teach children about carbon dioxide and physical
    reaction points.
  33. Vinegar, baking soda, and water create a
    chemical reaction that makes raisins dance
  34. Explore density of different liquid mixtures with this rainbow density Science experiment.
  35. DIY lava lamps show children that oil and water don’t mix.


Complete any of the above Science Fair projects for a fun and exciting time learning and experimenting at home. Your child will love showing off their own amazing Science Fair project to their friends!

About the author


Deana Hipwell is a homeschool mom of 3 from North Carolina. She's been The Frugal Homeschooling Mom for the past 8 years since quitting her job as a public school teacher to stay at home and teach her own. She is also the founder of the charitable organization, Homeschool Curriculum Free for Shipping which benefits over 13,000 families nationwide.

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