Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.

In this science fair project, students use the streak test to tell minerals apart from each other.

In this exciting design challenge, your child will use design thinking skills to create a mixture that can inflate a balloon.

In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.

Handedness and footedness refer to whether people prefer to use their left or right hand and foot. In this experiment, test hand and foot dominance.

The possibilities are endless with this fun Halloween-themed STEM activity! With simple supplies, your child will experiment, adapt, and use their creativity while they build structures using different specifications.

Create a homemade pair of sunglasses with colored lenses to see just how light and color affect our sight! Use this fun project to practice science!

This activity challenges students to use computational thinking as they create a sequence of commands that will make a robot move in a pattern related to the sound and rhythm of music.

How do organic materials become soil? This science experiment measures what materials biodegrade.

In this design challenge, your child will make a bottle rocket using typical household items.

In this design challenge, your child will create a parachute for a small toy using typical household items.

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 science fair project you will make a model of a cell membrane using very simple material.

This science fair project idea investigates emulsifiers that allow oil and vinegar to mix.

In this activity, your learner will be challenged to create their own tic-tac-toe grid out of building blocks.

This science fair project idea explores whether talking to a plant will help it grow.

This science fair project idea explores whether the process used to dry the beans we eat for food renders them unviable.

In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.

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

Using an empty tennis ball can and a swimming pool, you will determine if it's possible to have a conversation under water.

This cool science fair project teaches kids about temperature, density and buoyancy using balloons that float with normal air. No helium required!

In this project students experiment with making music using only glasses of water.

This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.

Science fair project idea which teaches you how to make butter by separating cream into butter and buttermilk.

How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.

Science fair project examining barometric pressure, and how it can be used to predict the weather. How does atmospheric pressures relate to weather conditions?

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

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

Do you love to make Jell-O? Find out in this science fair project idea if it is possible to make Jell-O with just warm water.

Crayons aren't just good for creating colorful masterpieces -- they're also great for science!