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.

The goal of this fun science fair project idea is to microwave candy and investigate: do some colors of M&Ms melt faster than others?

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

This classic children's game demonstrates how sound travels through air vs. through a solid.

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

Encourage your kindergartener to investigate and chronicle the weather she observes during the coldest months of the year.

In this sound experiment children listen for differences as they tap on a bag of air, a bag of water, and a wooden block held up to their ears.

This science fair project idea explores how length affects the weight a bridge can hold.

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

How do people move pianos and heavy furniture into tall buildings? Show your kids some pulley potential with this simple household exercise!

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

Hunt for natureâs treasure, the many different products made by trees!

Wiggly worms are known for staying buried in the soil, but how does that affect plants? Are earthworms and plant growth related?

This is a quick, easy science fair project that conveys the idea of density to preschool and early elementary children.

In this project children discover, identify, and sort seeds from a variety of fruits and vegetables

Roasting pumpkin seeds makes for a great Halloween activity, and a healthy snack!

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

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

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

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

Allow your first grader to get his artwork outdoors this summer by letting him create a garden art box for his arts and crafts supplies.

Introduce your child to the world of motion and physics with a bit of marble play inspired by Sir Isaac Newton!

Why does purple cheese look nasty? Because color plays a big part in how we perceive the taste of different foods. Are birds just like us in this respect?

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

Learn all about balance and motion as your child designs a corn maze!

You don't need to head to the Arctic to experiment with life in an igloo. Learners can build their own ice igloo at home from water and empty milk containers.

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.

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

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

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.