Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

Does electricity move better through thick wires or thin ones? kids will conduct this classic electricity experiment for this science fair project.

Kids get step-by-step instructions for how to make a rubber band car and explore the physics of potential energy with this fun engineering science fair project.

Does putting soapy water on plants help or hinder plant growth? Kids learn about greywater and how it affects plant growth in this cool science fair project.

Science fair project which will teach you more about the foods that you eat, and learn which ones are healthier choices.

This science fair project examines how tsunamis travel by simulating a tsunami moving around an island. You will generate a pretend tsunami in a swimming pool.

Experiment about connection of senses of taste and smell. Using blindfold and noseplugs, administer blind taste test. Analyze results and organize data.

Challenge your learner to design and build a city of their own in this creative engineering activity.

There's more to corn than the sweet yellow kernels. This easy craft project shows you and your kid how to make pretty corn husk flowers using just a few tools.

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

The purpose of this science fair project is to build a basic radio.

Help your fifth grader bring the magnificent spirit of Rome to a modern day, personalized clay coin.

This science fair project creates a visual model of whatâs happening to sound waves as a car approaches and then leaves.

This science fair project idea measures out the sugar of various foods and find out whether people can correctly determine how much sugar is in common foods.

Science fair project which determines if plants really do need water to grow, or whether they just need to be kept wet.

To help keep summer memories alive, have your fifth grader utilize their writing skills to create a summer book keepsake!

This science fair project idea compares biodiversity between drops of water.

This science fair project idea discovers if an artificial light source will yield the same plant health and growth rates as light from the sun.

Science fair project that determines whether landscaping fabric impacts the ability of plants to receive water.

How do series and parallel circuits work, and which produces the brightest light in a light bulb? Construct both in this project and find out!

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

This science fair project idea explores how much force is needed to move a lever at different distances from the fulcrum.

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.

Show your fifth grader how to create a vivid and colorful, Picasso-inspired, 3-D mask.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

This science fair project focuses on a polymer called hydrogel super absorbent crystal which absorbs water, swelling to many times its original size.

Science fair project which determines whether it is numerically possible to be connected to every person on the earth within six degrees of separation.

Science fair project determines relationship between number and variety of insects and spiders by collecting and counting invertebrates in a ecosystem.

Make sourdough bread...and learn some colonial history and modern science in the process!