In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

Challenge your learner to design and build a city of their own in this creative engineering activity.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

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

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

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

How does a compass work? What's a magnetic field? Kids will build their own compass at home to find the answers in this great science fair project idea.

Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.

What is a compound microscope? Kids find out by making one of their own in this cool science fair project.

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

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

This craft is a great way to explore the fascinating world of spiders and their webs as you collect spider webs from around your house with your third grader.

Who needs paint, glitter, or crayons when you have natural art supplies right outside your front door?

Help your own young scientist tackle the wonders of static electricity from the comfort of his own home!

Your child will create her own falling snowflakes using white paper and glue them over a tree, so it appears as if they are falling from the sky.

Have your child kick off their summer vacation by making a miniature water slide!

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

In this science project, the center of gravity is explored.

In this activity, your child will be challenged to create a device that protects an egg when it is dropped from a height of about 10 feet.

The project determines which type of birds prefer which type of birdseed.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

In this activity your child will create their very own marble maze!