In this free science fair project idea, we learn about surface tension and how it can support mass—in this case, a floating paper clip.

What cause the phases of the moon? Make a model to see how the positions of the Sun, Moon, and Earth cause the crescent, gibbous, quarter, full, and new moon.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

Look at people's face shape. Do you think their face shape affects your perception of kindness? Find out more in this science fair project idea!

The objective of this science fair project is to test the growth rate of a plan in a crystal medium in comparison to traditional soil.

Determine whether the relationship between a personâs armspan and height are genetic.

Become familiar with ratios and learn how to measure the diameter of the Sun and the Moon in this fun science fair project idea.

Science fair project that tests the correlation between outdoor temperature or weather conditions and the number of visible stars at night.

The objective of this science project is to determine the length of time for different seeds to germinate.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

Learn about the horizontal and vertical motion of a projectile in this cool physics science fair project idea for advanced middle and high school students.

In this fun activity, your child will create their very own solar oven to bake s'mores!

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.

This cool air pressure demonstration has kids break a ruler using only a newspaper and atmospheric pressure.

Your mission, if you choose to accept it, is to construct a parachute that will deliver an egg safely to the ground. Good luck!

Be a chemist for a day and study the simple reaction between sugar and heat. Try heating sugar and see what happens!

Can you increase the light and plant growth in your garden using mirrors? In this experiment, measure light reflection and find out!

In this science fair project, young children observe, record, and create collections of shapes in their world and increase their powers of observation.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.

This project examines the amount of saltwater required to affect the growth of plants and subsequent effects on growth and development.

Test whether cutting up meats will make it cook faster than just cooking it whole.

This snowman's not abominable, he's adorable! Your child can bring her very own snowman to life while practicing how to create texture.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

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

Do you have your isopods straight? Learn about sow bug and pill bug behavior by building a terrarium to study them in!

This project concerns activity happening millions of miles away, on the sun.

Test out various brands of permanent markers to see which one is least water soluble.

Your child will create an adorable Christmas tree from their footprint and practice counting while decorating their tree with objects of a variety of textures.

Here's a great activity that uses corks and toothpicks to create a fleet of floating boats. Which design makes for the most seaworthy vessel?

In this project, you will observe and record changes in sunspots over two weeks.