Science fair project that determines whether lettuce that is harvested gradually yields more produce than lettuce that is harvested all at once.

In this project children practice the scientific method while playing with puffy paint.

Let your second grader pay homage to an ancient Olympic tradition with this modern day Olympic wreath!

Your second grader will love this simple soda bottle race car activity. Make a ramp and customize your car for an entertaining way to learn scientific concepts.

Creating a home for a toad is an easy and fun project for kids. Here's how to make your very own toad abode.

Science fair project which determines whether the size or the thickness of a piece of paper has an effect on how many times it can be folded in half.

In this air pressure science experiment with a balloon and a jar, children will use heat to create a partial vacuum and suck a balloon into a jar.

In this project combining nature, art, math, and science, children make rubbings of leaves then observe shapes and structures and sort the leaf images.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.

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

Do different types of oil mix or stack? Find out in this science fair project idea!

In this science fair project, kids observe the expansion of liquids when frozen and determine if some liquids expand more than others in the freezing process.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

Introduce your second grader to the crazy world of static electricity with just a balloon and a sheet of paper.

Will storing cucumbers and tomatoes in the fridge destroy their unique flavors? Find out in this science fair project idea!

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

Using scherenschnitte, your science-savvy second grader will be able to create and display each part of a vegetable!

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

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!

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

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Want to spark your third grader's interest in gardening? Help him make popsicle stick fairies to decorate an enchanting garden oasis.

In this activity, young learners will make a balance using a plastic hanger and weigh a variety of small objects using candy corn.

This science fair project idea determines which method of hand cleansing is the most effective.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!

This science fair project teaches students the differences between fruits and vegetables.

In this science fair project, students use the streak test to tell minerals apart from each other.