This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

How greasy are your potato chips? Students will use a reliable method to quantify greasiness and compare different brands in this great science fair project.

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

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

Science fair project that determines whether mass and weight are the same or different.

Science fair project that uses muriatic acid to develop fingerprints that would otherwise be invisible.

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

What causes the seasons to change? Kids find out by modeling the earth's tilt using a globe, flashlight and graph paper in this cool science fair project idea.

This experiment tests which gender is better at catching how a magician performs his tricks.

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

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 are buttress roots? In this fun science project, make a model of a rainforest tree and learn how they help trees survive in the tropical rainforest!

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

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.

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.