Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.

In this science fair project, we'll explore how blocking the sun's light can stop those can stop photosensitive paper from changing color.

Check out this fun science fair project idea for 1st grade: a solar eclipse model that demonstrates total, partial, and annular solar eclipses.

What makes your shadow dance around all day? Let's play detective and find out why that sneaky shadow never stays in one place for long.

In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.

This project is a vivid, concrete introduction to the basic but important idea that plants need sunlight and water to grow.

This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.

In this free science fair project, build a star clock and learn how to tell time on a clear night by observing the big dipper!

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

This science fair project idea researches how your choice of clothing affect how hot or cool you feel during the day.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

This fun experiment provides a concrete and visually striking illustration of photosynthesis.

This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.

Science fair project that examines albedo, and how this information is applied in the design of cars, sportswear, and other items. Which colors reflect light?

Kids will build a turtle habitat in order to observe the climate preferences of this cold-blooded reptile.

The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!

The purpose of this science fair project is to explore whether UV light passes through some colors and not others by looking at blue, red, purple, and clear.

This science fair project will help students learn about non-vascular plants, such as mosses.

This science fair project idea teaches that time always passes at the same rate and nothing we do in our daily life âreallyâ affects how fast it moves.

Set off an a science adventure as you prepare a row of bee homes for your new visitors.

Do earthworms like moisture or darkness? Find out as we explore the relationship between earthworms and light.

Explore if planting seeds in a certain direction will affect how fast it germinates.

Camouflage is one of the most important animal adaptations in the African savanna biome. Kids create their own camouflage with this fun science fair project.

This science fair project idea examines which type of insulation holds in the most heat.

Kids will make a beautiful rainbow in a jar and learn what enables different types of liquids to remain distinct in separate layers.

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

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.

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.

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

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