The next time you and your fifth grader go on a hike, take along this key to figure out which common North American animal left a track along the river bank.

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

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.

This science fair project idea determines if family members can recognize one another using only the sense of smell.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

The project investigates which soft drink is worse for your teeth by observing the affect of soft drink on limestone.

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

Find out whether cast iron or regular teflon pans heat up faster and also retain their heat longer.

This science project idea examines the effect of microwaving on various objects.

The project examines absorbent polymers absorbency in disposable diapers and their unique ecological problem to the environment.

In this experiment, the weight of aluminum cans will be compared.

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

In this project, several food items are tested to determine whether they contain starch.

This science fair project idea observes products available in the school cafeteria and waste produced by these products.

In this project, a model of a submarine is built to simulate the buoyancy and displacement of water and air.

This science fair project idea researches the definition of ‘biodegradable’ and explores this in a real-life setting.

This science fair project idea discovers which parts of the body are more sensitive to touch than other parts of the body.

In this project, the affects of vitamin E are observed on a rose petal.

In this project, different childproof containers are tested to see how childproof they really are.

Excite your fourth grader by recreating ancient Viking myths. This miniature longboat will explore the principle of water molecules expanding when heated.