Science fair project about work and energy which uses a simple mathematical formula to predict how far a jar will roll down an incline.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

Learn to solve a crime scene investigation using an important forensics tool: oblique lighting.

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.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

This experiment has students record rat behavior to learn about the benefits of rats and research rat myths throughout history.

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

Science fair project that examines what causes thunder and why a thunderclap sounds so loud. How is lightening related to the creation of sound waves?

Soil and energy don't go together, right? That would be as bizarre as a pairing of peanut butter and marshmallows! Well, actually...

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Hone your child's skills of observation and take a look at forensic science for an interesting afternoon of exploration and detective work!

Science fair project that determines whether mass and weight are the same or different.

This science fair project idea provides evidence that air is everywhere and takes up space.

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

In this science fair project you will make a model of a cell membrane using very simple material.

This science fair project idea explores how enzyme inhibitors, active sites, non-competitive enzyme inhibitors, and substrates work.

Science fair project which examines the relationship between frequency of spider web vibration and spider's response time.

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

Would your child like to learn about a hidden world? All she needs to do is open her box of markers!

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

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

How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.

Here's a fun activity that will introduce your fourth grader to the concept of frictionless motion by constructing a hovercraft.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

Help your child create a tasty treat that will demonstrate exactly how frogs survive a freezing season.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

This science fair project idea explores whether cats can be trained in the same way that dogs can.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

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