Science Fair Projects for 4th Grade

Grow your own salt stalagmites and stalactites in your kitchen!

Breathe in. Breathe out. Do you feel your chest expand and shrink when you breathe? That change in size is how you get air into your lungs! It all has to do with the physics of air pressure, which you’ll investigate in this project.

Want to explore anatomy without the hassle of gathering materials? Dive into learning with a Vet Starter Kit from the KiwiCo Store! 

Did you know that you can create your own cloud in a bottle with just a few easy steps? Follow along with this simple DIY (or watch the video tutorial) to learn about how clouds form, while creating you own cloud in a bottle!

Interested in the science of pressure? Learn about how pressure makes volcanos erupt with a Geologist Starter Kit from the KiwiCo Store!

Amaze your kids with this magic water experiment! Teach them about how the density of water changes with different temperatures in this colorful and mystifying project.

This trick relies on the difference in density between hot and cold water. When water is heated up, its water molecules move more quickly, expanding the space between individual molecules. This increases the water's overall volume and decreases its density.

How can you get an egg to drop without breaking it? Change the way it drops with this awesome egg drop experiment!

An egg drop experiment is the perfect way to tap into your creativity and solve problems through a cool (and messy) project! Think outside the box and engineer awesome solutions to keep your egg safe and sound. If your egg doesn't crack, then your design is a success!

Discover everything that eggs have to offer with Eggsperiments from the KiwiCo Store! Use the scientific method with a series of egg-based experiments that explore chemistry, physics, and biology.