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!

Here is a hands-on activity to help third graders understand the four points of a compass...and how we use them to get around.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

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.

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.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

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

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

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

Amaze your kids by separating a salt and pepper mixture using an "electric spoon" charged with wool.

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

Recreate the fantastic phenomena of solar eclipses with your child using just a flashlight, a quarter, and her very own face!

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

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.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

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

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.

Using a glass fishbowl, you and your kids can create a low-humidity, open-topped terrarium perfect for easy care, drought-tolerant succulents.

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.