4th Grade Life Science Projects

How do fish breathe? How do gills work? In this science project, learn about aquatic respiration and find a fish's breathing rate in different temperatures.

This science fair project has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.

In this fun science project, learn about what happens to cut fruit and experiment with how to stop apples from turning brown.

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

This science project challenges students to study deer behavior in their natural habitat- the feeding patterns, social behaviors, male to female ratio, etc.

This science experiment tests if dog saliva can really help heal wounds.

This science fair project teaches students about wilting and browning of salad greens.

This science experiment tests whether warm or cold water works best in making cut flowers last longer.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

This science fair project challenges students to study how camouflage and environment are related in squirrel populations.

The project investigates the affect music has on plant growth while experimenting with rock, classical and no music.

This science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This science project teaches students to classify different shapes of leaves.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

The science project fair idea explores the interaction between your nose, mouth, and brain when tasting a new food or drink.

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

Would your dog prefer homemade or store-bought food? Raw or cooked? Test your dog's preferred diet in this fun experiment.

In this project, the fingerprints of family members are compared to determine if people from the same family have similar fingerprints.

What chromosome combinations determine a fetus gender? Use probability to think about whether a sperm and ovum will create a male or female in this project.

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!