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

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Find out which type of sponge holds the most water.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

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

In this experiment you will replicate the mummification process by making a hot dog mummy.

Tired of gum with flavor that lasts for just a couple of minute? Put gum to the test with this chewy science experiment!

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.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

Use pepper and soap to discover some fun facts about the properties of water.

This science fair project idea experiments with spinning color wheels and optical illusions.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

This adventurous art project will send kids on a scavenger hunt for fall materials they can use in their artwork. This craft also teaches kids about seasons.

What's the relationship between temperature, air humidity and static electricity? Kids will find out with this free static electricity science fair project.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

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

Challenge your young dinosaur lover to examine dinosaur footprints and then create their own dinosaur fossil in this hands-on activity.

Children use their design thinking skills and powers of observation to create and construct a bird nest.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Teach your child some scientific basics as you explore the densities of various liquids in this fun experiment.

Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

Enjoy those warm spring and summer nights with your child while teaching some basic astronomy at the same time.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

Chemistry is a blast with this backyard bomb made from a sandwich bag. All you need are ingredients from the pantry to create a satisfying, and safe, explosion.

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

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!