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.

Explore if planting seeds in a certain direction will affect how fast it germinates.

This science fair project idea examines which type of insulation holds in the most heat.

Your third grader will delight in learning about sound waves as he observes the different sounds created by tapping on glasses with varying amounts of water.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Could there be toxic chemicals lurking in the cupboards and closets of your home?

Show your child how and why the microwave works, while demonstrating just how strangely foods can behave while inside the crazy cooker.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

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

Prove that the Earth is not flat. The objective of this science fair project is to measure the angle of the sun and calculate the circumference of the Earth.

This cool and easy elementary school science fair project idea provides the basic information on the use of our senses to experience the world about us.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

Your child can use leaves and grass to create his own outdoor art in celebration of Earth Day...all he needs are is the great outdoors and some creativity!

Help your fifth grader embrace the roots--literally--of Mother's Day by growing carnations to honor mothers in you family's history.

This science fair project idea determines the operating differences of AAA, AA, C, D batteries all with a 1.5 volt rating.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

If your mom likes flowers, make her a sweet gift that she'll treasure with this fun craft, a pretty Pressed Flowers Card!

Help your child get to know the least-appreciated of the five senses, the sense of smell, with a smelling station.

Discover whether a metal will expand under hot water.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

In this activity, your kid will watch coal turn into crystals right before her very eyes, and learn some science along the way!

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

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

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.