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Is the birthday paradox really a paradox, or just an intriguing problem that defies intuition? Find out with this birthday paradox science fair project.

Have your kid build an ice sculpture in this activity that's so fast, fun, and messy it's the perfect way to demonstrate how much fun experiments can be!

Using a glass fishbowl, you and your kids can create a low-humidity, open-topped terrarium perfect for easy care, drought-tolerant succulents.

Your kindergartener will have a blast helping you craft these fun, eco-friendly potted place cards.

First graders are learning basic addition and subtraction math facts. Practice in the sandbox with this fun outdoor math activity!

Is your child a nature nut with an eye for creative, green-friendly projects? Introduce them to this amazing DIY bird feeder!

Here's a science activity to help your child investigate how seeds are designed to travel.

Demonstrate how static electricity can cause an object to move. It also examines just how an object affected by static electricity will move.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!

The objective of this science fair project is to analyze the effects of salinity and temperature on water.

Create an organic plastic product using vinegar and cream. Track decomposition over course of several weeks. Compare decomposition with traditional plastics.

Multiple-choice test questions can be confusing. Here's a toolbox of tricks and strategies to help your teen become a multiple-choice master.

Help your child create a working lung model that fills with air just like the lungs inside of his own chest when he breathes.

While your cells are much too small to see without a microscope, you can create the look of a cell in your very own home with just an egg and vinegar!

Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Kids will learn how to clean fish tank the natural way. Add catfish to the tank and see if your water gets cleaner.

These flying potato poppers make a cool sound, create a celebratory mood, and they can teach your child about the power of air pressure.

Here's a math, science, and social studies activity: help your kindergartener become a "coin archaeologist" by examining how different coins look and feel.

Alive or not? This yeast experiment you can conduct with your little scientist explores the answer to this timeless question.

The objective of this science project is to determine the relationship between carbon dioxide gas and the temperature of the atmosphere.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

This science fair project idea experiments with spinning color wheels and optical illusions.

This science fair project determines the quality of a given product.

Have you ever seen fruit decay? Find out if a fruit will rot faster if you open it versus leaving it untouched!

This project examines whether humans can intuitively grasp numeric values greater than three.

In this science fair experiment, high school students fit the growth pattern of bacteria to a mathematical model and predict future colony expansion.