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This science fair project idea examines the distance a person travels on an average day and to relate that to an understanding of the size of the Earth.

Construct calorimeter and determine the caloric value of a sample of foods by change in temperature for each of the foods.

Plants and light seem to be good buddies, but how far does the friendship really go?

Explore the belief in astrology as a predictive system.

Science fair project that examines how temperature affects density and how density in turn affects the behavior of helium gas.

Plants help keep a house cool! This article includes step-by-step instructions for completing this fun and interesting science experiment.

This simple experiment serves as an introduction to the greenhouse effect.

In first grade, children are introduced to fractions. Here's a recipe that combines fraction practice with winter fun and lets kids actually paint the snow!

Learn about endothermic and exothermic reactions and energy exchange by experimenting with temperature change in chemical reactions.

Illustrate the idea of light refraction with this exciting and mystifying experiment.

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Observe trends in the properties of writing materials over past 5000 years and extrapolate to future time. Prepare a table that compares writing material.

Science fair project which determines whether plants are able to get enough nutrients from different types of garbage.

Here's a fun activity that will have your child researching, collecting, and charting plant specimens from the neighborhood.

What is the hydrologic cycle and how does it work? Check out this fun and easy science project where you will model and learn about Earth's water cycle!

Help your child understand the scientific concept of evaporation with this fun outdoor science activity.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!

This craft is an excellent way to learn about African-American history, and it also provides fine motor practice.

This science fair project idea explores what it takes to create a biosphere, or a self-sustaining ecosystem.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

What heats up fasterâwater or soil? 5th grade students test the specific heat of water against the specific heat of sand in this great science fair project.

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

Word color association is just a fancy way to talk about the way we connect colors with words.

In this enlightening transpiration experiment, kids will explore how the loss of water from plants through transpiration contributes to the water cycle.

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

This science fair project will help learners determine whether algae can be made to grow by feeding it supplementary carbon dioxide.

Check out this fun leaf chromatography science fair project idea for middle school students and discover the hidden pigments in leaves.

Learn about the effect of artificial light on plant growth versus natural sunlight and delve into some biology and botany concepts in this science project.