This science fair project idea identifies trees using a dichotomous key.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this project, create and examine garden mulch to find out what critters live in the messy, muddy layers just above the soil.

In this project students experiment with making music using only glasses of water.

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

The objective of this science fair project idea is to examine light refraction as it passes through liquid crystals.

Construct and experiment with a periscope using reflected light rays to gather an image.

This science fair project idea produces sounds by creating vibrations using different objects.

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

In this activity, your child will be challenged to make a tower using paper cups.

In this design challenge, your child will make a bottle rocket using typical household items.

Science fair project in which you will start a fire from scratch without using matches or a lighter.

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

This science fair project idea explores whether a sundial is as accurate as an atomic clock when telling time.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

Teach your first grade scientist the difference between liquids and solids using maple syrup.

Using a toy race car kids create a visual model of the Doppler Effect.

In this design challenge, your child will create a parachute for a small toy using typical household items.

Reinforce your child’s understanding of the alphabet by helping them construct all of the letters using pipe cleaners.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

Demonstrate the properties of pressure and surface tension to explain how water can stay inside an upside down glass using cardboard.

Science fair project in which you will attempt to throw a ball the greatest horizontal distance possible by using different angles.

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.

In this awesome science fair project idea, kids will be attempting to pick up different objects using snail slime.

Show your preschooler how to make a print of a butterfly using her hand as a tool--a great way to stimulate her sense of touch.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!

For this science fair project, kids will learn how to make a lemon battery. They can conduct this classic experiment using readily available materials.

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!