Free science fair project idea that examines the differences between cats and dogs. Analyze objective qualities rather than subjective ones.

Based on the concept of water's "freezing point," this activity entails the lowering of water's freezing point to chill ice cream!

In this fun experiment, we'll find out how color affects heat absorption!

This science fair project idea explores whether boiling and freezing water will have an effect on how much it weighs.

Chemistry isn't just incredible ... sometimes its edible! These crystal lollipops are a delicious introduction to chemistry concepts.

This science fair project idea investigates if fats add to the flavor of food.

This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.

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

This science fair project idea recreates the movement of planetary bodies in order to learn why they sometimes appear to move backwards.

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

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

Boys might wrinkle their noses at the thought of gardening, but we guarantee they'll like this activity! Make a recycled terrarium full of bug-eating plants.

What happens when eyes see something that the brain knows cannot be true? In this science activity, the brain has to "fudge" it when interpreting what you see.

Science fair project idea examines validity of mood ring predictions. Analyze accuracy of results, consider the impact of temperature

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

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

Check out this fun science fair project to make a vinegar and baking soda balloon and demonstrate how gas is created as a result of the chemical reaction.

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

Is horse manure a possible energy source in a crisis? Use calorimetry to find out how much energy horse manure can produce in this science fair project.

Science fair project that helps you better understand density by comparing the relative densities of cans of Coke and Diet Coke.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

This science fair project idea explores how the shape of a boat affects its density and how much weight it can float.

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

Discover which fabrics shrink the most in the wash and why.

If your fourth grader is obsessed with all things glow-in-the-dark, then here's an activity that will really light up her imagination!

This science fair project idea identifies trees using a dichotomous key.

Do lefties just write different or are their brains different? This science project has students explore what it means to be left handed.

This experiment that explores water and air pressure will amaze your fifth grader as it appears that a single card is holding water in an upside-down glass.

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

Demonstrate how you can make your own compass using a magnetized needle. It also allows you to compare magnetic north and geographic north.