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.

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

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

What does a raindrop look like when it splashes on the ground? Is each raindrop unique like snowflakes? Find out how raindrop size varies in this experiment.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

Is it possible to trick the forces of nature that make your bubbles round to create a square bubble?

In this experiment we will be determining whether birds prefer certain colors of seed.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

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.

This science fair project idea discovers whether there are some objects that do not fall at a constant rate.

Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

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

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

This science experiment tests why guacamole goes brown and if leaving the pit in will stop guacamole from turning brown.

Will increasing the amount of salt in water effect how slow or fast the water freezes?

The objective of this science fair project is to explore the relationship between acidic and basic compounds.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.

This science fair project idea examines whether the colors of the spectrum respond differently in the thermal aspect when radiated by the sun.

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Construct and experiment with a periscope using reflected light rays to gather an image.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This science fair project idea researches the effects of acid rain on plant growth.

Do you think you could walk around upside down -- with your feet in the air and your head on the ground?

Cleaning can be a chore, but not with this sudsy experiment!