In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

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

Is it solid or liquid? Create oobleck and witness the amazingly weird oscillation between the two!

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

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.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

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

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

How can we describe the relationship of magnetic field strength vs. distance? Kids will find out with this free science fair project idea.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

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

Make edible amber fossils with your second grader to explore the fascinating world of science!

This second grade arts and crafts activity is all about caterpillars emerging from their cocoons as butterflies.

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

Is it a square or a circle? See if you can trick your friends with this zany science project!

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

Why doesn't the ocean freeze? Students answer this question by simulating the chemical composition and temperature of arctic waters in their own home.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

How do organic materials become soil? This science experiment measures what materials biodegrade.

Is your little scientist up for a rocky challenge? Let them make their own geode rocks using eggs and epsom salts!

Help your child celebrate the summer and the sun by making a sandy seascape.

Has your child ever played weatherman? Try this science activity that lets kids try their hands at observing and predicting the weather.

Air invisible; it doesn't make sounds; you can't pick it up and throw it. So how do we know it exists? Help your second grade scientist figure it out.

Do you think you can blow down a sand castle with a mighty wind? Find out which material stands up best to erosion in this erosion experiment.

Make all-natural dye from vegetables to create gorgeous homemade play-silks!

In this activity, children will let their imagination run wild as they design and build a new planet in the solar system.

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

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

How do animals keep warm? In this experiment, find out whether fat insulation resists cold temperatures and learn how this works in the animal kingdom.