This science experiment tests whether warm or cold water works best in making cut flowers last longer.

Help your second grader observe the phases of the moon, and then let the fun loose: he'll get to chart his observations with marshmallows!

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

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

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

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

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

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 science project lets students explore the number of spots on a ladybird and how to treat ladybugs with respect.

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

Teach your child to dye eggs with natural ingredients from the grocery store. From pink to gold, these eggs are perfect for hiding, hunting or simply munching.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

In this activity, your child will transform an egg into a glowing, bouncy "ball" that they can play with.

How does dishwashing liquid work? Kids discover the chemical mechanism behind cleansing power in this easy science fair project idea.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

Before you get ready for a delicious scramble or omelet, add a bit of science to your morning routine!

In this activity, your child will be challenged to build a tall tower out of building bricks! The instructions include questions prompts to guide students through the design challenge.

Put your second grade scientist to work this Fourth of July with our colorful "liquid fireworks" project!

Plants and light seem to be good buddies, but how far does the friendship really go?