Kids will learn how to make a thermometer to to explore liquid density in this great science fair project. Which liquids are affected by temperature the most?

This winter garden project is just about bomb-proof, and believe it or not, it might even make a great gift. So get craft happy with your first grader!

Your child might have noticed how bubbles quickly lose their colors and pop. Check out this creative way to make those bubbles last longer.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

Dinosaurs were huge creatures that left behind huge footprints that lasted for millions of years. In this science fair project, kids learn how dinosaur tracks were left behind!

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

How does water pressure change with depth? Kids learn how pressure works underwater with this cool and easy demo.

What is surface tension? Kids will discover how water-skating insects use surface tension to keep from sinking by making a model water walker.

Planning a beach vacation? Here's a cool nature craft you can make in the sand with your child.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

In this project, build an insect model that shows how the head, thorax, and abdomen fit together! Learn insect anatomy by constructing a paper mache critter.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

Learn how starch and carbohydrates interact with different solvents in this fun and easy packing peanut science fair project.

Learn about the layers of the Earth and make a model! Create a earth layer book, cake, or clay diagram.