Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

In this science fair project, kids start a chemical reaction that will make a balloon inflate itself!

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.

In this cool engineering science fair project, kids learn how to build Hero's engine: an enlightening example of Newton's third law.

Learn about sound physics and do a survey experiment to explore the difference between sound and noise in this science project.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Science fair project in which you will learn more about the natural world by preserving and identifying different animal tracks.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Kids will learn about insulation, heat conduction, and the economic benefits of energy efficient windows in this cool science fair project.

The objective of this science fair project is to observe the differences in heat absorption for darker colors vs. lighter colors.

Kids will love making sugar crystals in this sugar crystal science fair project which teaches important chemistry concepts like saturation and solubility.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

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

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

In this science fair project you will make a model of a cell membrane using very simple material.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Science fair project that compares the freezing temperature of salt water and freshwater in order to learn about supercooling and condensation nuclei.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.