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

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

This science fair project has kids conduct a blindfolded taste test to determine how smell influences our ability to taste foods.

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

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

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

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

In this project, vinegar and salt act as preservatives keeping bacteria from growing in the bouillon mixtures.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Science fair project that examines how winter storms form and the relationship between temperature, moisture and snow.

Magnets vary in strength. Have your young scientist figure out which kind of magnet is the strongest when you have him conduct this attractive experiment.

This science fair project will help students learn about non-vascular plants, such as mosses.

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

What's the difference between a microwave and an oven? Use mashed potatoes to explore which kitchen appliance does a better job at keeping food warm.

This science project has students collect wood samples and invent new uses for different types of wood based on its properties.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

Find out which kind of bubble wrap fares best when put in impact.

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

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

How would you dry your wet clothes if your dryer didn't work? Find out with this fun experiment!

Develop your child's mathematical and engineering skills with this fun building brick challenge. In this activity, your learner will be challenged to create a boat out of building bricks.

Get down to the rubber with this science project that tests the effectiveness of different types of erasers.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.

Test your friends to find out if you can replicate the placebo effect's incredible results.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

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.