First grade science often covers solids, liquids, and gases. This silly science explores serious facts about the difference between all three.

Here's a first grade ladybug game that explores how air can move solid objects, and adds some measurement practice, too. Play, learn, and enjoy!

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Your kid can learn about the process of making frozen yogurt and enjoy a homemade, flavorful dessert. Experiment with this fun, chilly food!

Cinnamon is tasty, but does it have super powers as well? Find out if cinnamon can repel mosquitoes in this outdoorsy experiment.

In this science fair project, kids measure how weather conditions affect how fast a puddle evaporates.

This science fair project teaches about mold. Students will test different foods to see which grow mold the fastest.

Make some easy homemade yogurt with your young scientist, and see what a few 'live' bacteria can do in the right conditions!

Science fair project that examines condensation and the conditions needed in order for dew to form.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

In this activity, students will be challenged to describe and count the ways a toy moves from one position on a grid to another.

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?

Explore solids and liquids with your young scientist by making gluep, a goopy substance that can behave like both a solid and a liquid!

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

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

Using a toy race car kids create a visual model of the Doppler Effect.

Get your child outside to observe the clouds, and get a fun exercise in science, writing, and arts and crafts! Here's how.

Find the North Star, and measure your latitude! The purpose of this science fair project is to find latitude and learn about geographic locations.

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Your 1st grade scientist will improve her observation skills as she's encouraged to eat healthy by comparing the dry and fresh fruit in this experiment.

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

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

In this fun science experiment, kids will determine the best method for ripening avocados and discover the cool chemical reaction that makes this possible.

The goal of this evaporation experiment is to learn about how different external conditions affect drying time.

In this fun design challenge, your child will get creative with making structures out of toothpicks and gumdrop candies.

Here's an easy experiment that lets your first grader practice the scientific method, while watching a caterpillar eat.

What is a wedge? Kids find out by experimenting with different wedges in this simple science fair project idea.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.