How does the size of a vibrating surface affect the pitch of a drum? Learn about drum size and pitch with this easy science fair project idea.

Make sourdough bread...and learn some colonial history and modern science in the process!

This science fair idea project identifies the active ingredients in soap and experiments with the properties of soap.

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

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

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

With some cookie dough and ordinary household objects, let your kindergartener explore how fossil imprints are made.

Looking for an enjoyable evening activity you can do with your kids? Study the stars: help them learn about constellations by making one of their own.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

In this science fair project, learn how to make gears and find out why they transmit torques in predictable ways.

Help your child measure breezy weather in her environment by making a wind vane for kids, a simple version of the classic scientific measurement tool.

Let your young adventurer go bug hunting in the great outdoors with their very own bug net!

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

What are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

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

Your kid will delight in creating an extraterrestrial vehicle from goods found around the house. There's no telling where her imagination will go!

This science fair project idea investigates the difference in reaction times between boys and girls.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

You and your child can create this beautiful butterfly mobile for hanging anywhere in the home (and learn about this magical creature while you're at it).

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

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

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Create a habitat for a butterfly right in your own backyard, and build your first grader's science knowledge while you're at it.

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