In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

This project compares the strength of one, two, and three-ply toilet paper.

All you need are pencils, paper and some scissors to get started on this easy and fun game to review astronomy information, or other types of study concepts.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

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

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

Show your fifth grade scientist how to create a siphon using two buckets, plastic tubing, and water. Watch her astonishment as the water travels uphill!

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

In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

Check out this fun and easy 4th grade science fair project idea that tests how gravity induces positive and negative geotropism (gravitropism) in bean plants.

Here's a great early reading and science activity for curious children. Learn how to plant your child's name in seeds for a growing writing activity!

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Grow a garden with an environmentally-friendly twist by using plant scraps that usually get thrown away.

Children learn the six parts of a plant...but do they really understand? Try this plant-themed meal plan to bring school science into the home.

Learn how to grow an avocado plant indoors with your 1st grader in this hands-on gardening activity.

Here's a fun at-home activity that will help your child strengthen math skills using high and low temperature data, and become a master temperature tracker!

Your child helps the environment while saving your family money in this fun and rewarding "Gas Guzzlers" competition.

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

This science project teaches students the relationship between compost and plant growth. Students conduct an experiment with different types of compost.

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

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Check out this science project idea to compare organic produce to non-organic produce and how preservatives in food extend the shelf life of goods.

Explore scientific concepts with this experiment that introduces kids to the scientific method!