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.

What's the best way to make DIY compost? Kids will learn about aerobic and anaerobic decomposition while learning to appreciate the value of composting.

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

Check out this cool science fair project idea to explore various aspects of projectile motions like mass, angle and distance.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

Examine the effect of pressure on carbonation in soda.

This science fair project idea explores which is better for diffusion and cell absorbing, more surface area, or more volume.

Can you win a staring contest? Would your performance be influenced by your eyesight? Find out in this science fair project idea!

This science fair project idea explores the egg's thin membrane.

Pair a planetarium visit with this fun art project that mimics the look of far-off galaxies.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

The thermometer outside is dip, dip, dipping! What kind of clothes will keep you warmest this winter? This project determines which materials insulate best.

This free science fair project explores the "dirty" relationship between the presence of organic material in soil and water absorbency.

The project idea is to establish whether it is easier to memorize words with fewer syllables and to understand how memory works.

Determine which metal has the highest rate of conductivity.

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 which measures whether tsunamis are more destructive when they are caused by an earthquake or by a meteor.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

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.

Play with balance and simple engineering as you hurry to create a sturdy rock tower.

Demonstrate the capillary function in plants by adding food coloring to glasses of water. Slice stalks of celery and leafy tops. Compare color of leaves

How does a kazoo, the strings of a guitar, or the speaker of a radio make sound? The purpose of this science fair project is to show how vibration makes sound.

This experiment strives to determine if tracking of conservation habits will lead to reductions in a family's electricity and water bills.

Determine if it is easier to memorize colors, words, words in phrases, pictures or numbers. Determine at when retention rate in each category is the best.

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

Check out this hot project idea to culture bacteria and determine if the claims about the anti-bacterial properties of curry and cinnamon are true.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

Learning about how plants grow is a building block in the early grades science curriculum. Put a fun twist on this life science concept with these cup monster friends!