Science Projects for 4 Year Olds

Top Science Projects For 4-Year-Olds

Engage and delight your little explorers with hands-on science experiments! From creating ice fossils to conducting chromatography tests, these projects will keep their little minds entertained while learning something new!

Your preschoolers will gain a better understanding of density with this ocean activity! You only need a large container and various water-safe objects with various densities – like sticks, rocks, and coins.

Fossil-Making Activity

Students will create fossils from modeling clay and objects that leave impressions, such as leaves, shells, or toy dinosaur bones. Students will learn that an object pressed into the sediment leaves an imprint that can later be filled with minerals to become mold fossils.

Encourage critical thinking skills among 4-year-olds with this exciting science experiment! Kids can test if any interesting statements about fossils are fact or fiction!

Color-Changing Foam

Children learn about solids, liquids, and gases while playing with this fascinating foam science experiment. Perfect for classroom demonstrations on density.

This color-changing activity is an engaging way for children to learn about the water cycle – plus it’s quick and fun!

Explore what melts away in the sun with this creative science activity! It makes an engaging art and science project for hot, sunny days!

Fossil Bubbles

Help preschoolers explore density with this engaging activity that illustrates how bubbles freeze and pop. Plus, they’ll enjoy exploring this slimy creation!

NurtureStore offers this fun activity to introduce toddlers to states of matter with this educational activity. 

They will color the edges of the paper towel before dropping them in two glasses of water to observe what occurs.

Cloud Spotter

From Cumulus clouds filling a sunny day to Noctilucent clouds illuminating from space, our fascination with clouds has long mesmerized scientists and daydreamers alike. Let students discover these ever-ephemeral masterpieces using Jam Potatoes’ DIY Cloud View Finder!

Explore states of matter with this fun Skittles rainbow science experiment designed for kids, or encourage them to try making rain in a jar with this excellent science activity that introduces gravity. They will love this fantastic activity!


A spectroscope is an instrument that separates light into its various wavelengths, making it possible to identify gemstones and minerals more accurately. Kids can build their spectroscope through this fascinating science experiment that also serves as an art project!

Encourage kids to explore magnetism with this engaging magnetic discovery bottle. Encourage them to test different objects for their potential attraction to magnets.

Color-Coded Earthworms

Earthworms play an essential role in keeping soil healthy by creating tunnels that allow water and air to reach plant roots. This simple science experiment shows how they do this and their other essential tasks.

Combine art and science with this fun activity using just markers! Kids will create an eye-catching wax paper art project while exploring density.

Make learning about earthworm decomposition fun for preschoolers with this easy experiment! They’ll discover how earthworms break down organic material.

Color-Coded Water Circles

Attract preschoolers’ attention and help them discover colors with this captivating water science experiment! Arm them with kitchen items such as eyedroppers and prompt them to drop glitter, food coloring, or small trinkets into their water as you observe its chemical reaction into an incredible mesmerizing swirl!

Help children gain an understanding of density with this ocean activity that showcases what sinks or floats according to different densities. Plus, this activity provides a great way to discuss topics like ice and salt!

Geoboard Activity

Kids can develop geometric, shape, and symmetry skills with this homemade geoboard activity and improve motor skills and spatial awareness.

Engage students in exploring gravity with this experiment that allows them to drop balls of different sizes and observe their movement. It’s an ideal way of showing that what goes up must come down!

When you ask children to create a colorful tornado in a jar, combine art and science – they will be mesmerized by its results!

Engineering Wall

Help children experience the power of static electricity with this inspiring craft project! They’ll create a butterfly out of tissue paper wings powered by static electricity to flap using energy from static electricity.

Encourage kids to experiment with My Mundane and Miraculous Life’s intriguing milk experiment! Just a few ingredients and patience is all that is required!

Introduce children to the scientific method with this ocean activity! They’ll see how different-density waters sink or float depending on which vessel is used to hold them.

Frozen Snowballs

Snowballs (commonly called snowballs) are similar to snow cones in many ways, with distinct distinctions. Snowballs use fluffy, finely shaved ice that melts quickly on your tongue – an element geologists believe helped trigger Earth’s Cambrian Explosion when temperatures suddenly changed from extreme glaciation to life-rich conditions.

Serve with a dusting of powdered sugar.


As we conclude our exploration of top science projects for 4-year-olds, remember that these activities are more than just educational – they’re a gateway to a world of excitement and curiosity. 

From creating fizzing eruptions to exploring the magic of magnets, each project engages young minds in a delightful blend of learning and play. 

Embrace the joy of discovery with your little scientists, and watch as their eyes light up with understanding and wonder. Stay tuned for more educational inspiration as we continue to explore the world of science for young minds. Happy experimenting!


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