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

The purpose of this science fair project is to demonstrate how yeast, a fungus, causes bread to rise.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

Here's an easy project: create a homework helper bookmark so your fourth grader can write down assignments and mark the pages he needs to read.

This science project encourages students to investigate the Mozart Effect, the idea that classical music promotes learning.

Learn about Rosh Hashanah and other Jewish holidays by planning and creating a Jewish holiday calendar.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

Learn whether Mylar Balloons last longer than Latex Balloons or vice versa.

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

This science fair project idea explores the different properties & interactions of sugar molecules.

Children will reflect on the importance of performing acts of kindness for the Earth, hear a story about easy ways they can care for the Earth, and set goals to conserve more in their everyday lives.

Wondering how to help your child get a handle on prime numbers? Turn her into a prime number hunter with this hundreds chart activity.

Introduce your fourth grader to the concepts of solstices by observing the length of her shadow on the shortest day of the year, compared to other solstices.

This science fair project idea investigates whether plants can survive being frozen.

This science fair project idea explores which fruit molds the fastest.

This science fair project idea determines if the color of light affects the growth of plants.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

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

Children will learn about food waste and conservation, create a poster that lets others know about the importance of food conservation, and make a plan to waste less food and consume with mindfulness.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.

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!

In this outdoor science activity you'll find tips on how to create a nature journal by choosing a native plant or animal and tracking that species.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

This is a simple, fast game that you and your child can make together to help him master rounding with decimals.

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

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.

Science fair project which uses coins flips to visually demonstrate the probability of an event and how to express it.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.

Looking for a simple, yet unique writing activity for your child on Valentine's Day? Try a hand at haiku!