This science fair project explores how osmotic pressure forces water through the root up into the plant.

How does distance affect the spreading of light? Kids see diffraction and the inverse square law of light in action with this great science fair project idea.

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

This science fair project idea explores alcoholic fermentation at work by making your own soda.

The pinwheel is a simple toy that has been around for years and uses the wonders of the wind to spin it and delight kids of all ages!

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

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

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Find out which kind of bubble wrap fares best when put in impact.

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

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

In this fun activity, your child will create their very own solar oven to bake s'mores!

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.

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

Here's an interesting activity that will enable your child to make his own magnifier out of a drop of water

Household items and a bit of imagination will create a CSI kit for your child to have investigative adventures with. Explore the world of forensic science!

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

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

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

Invite your fifth grader to test the different rates of liquid absorption in synthetic and cotton materials, such as nylon and cotton.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!

Make your own marshmallows and mix up some very interesting third grade chemistry lessons while you're at it!

Find out whether matte or shiny nail polish lasts longer.

Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.