Show your child how to construct a homemade thermometer. It's hands-on fun and a great way to learn about this important instrument!

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

Kids will learn how to measure the viscosity of liquids by making their own homemade viscometer in this great science fair project idea.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Learn how to make a hygrometer to measure relative humidity in this project. Make a sling psychrometer hygrometer with gauze, thermometers, and a bottle.

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

See how to write a love song simply in this kid-focused tutorial. Learn how to write a love song for Valentine's Day and beyond.

Remember the classic card game, Go Fish? Here's a fun twist on it that will help your kid learn her the different parts of speech in a fun way!

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

Does the temperature of a magnet affect its strength? Learn about the relationship between magnets and temperature with this cool physics science fair project.

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

Children learn about mindfulness tools that may support them to manage their emotions. Then they will create their own video to teach others these same mindfulness tools.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

In this simple science project, learn about what causes dew and what affects dew formation with a drinking glass, ice, and a soda bottle.

Learn about magnifying glasses, concave lenses and inverted images by sending rays of light through a magnifying glass in this cool science fair project!

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

Learn about where colors come from and how light absorption works in this fun experiment! All you need is a flashlight, construction paper, and cellophane!

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

What are the effects of colored light on plant growth? Explore plant behavior in this cool botany science fair project and learn about phototropism!

Your child can transform plain yogurt into a healthy and tasty treat the whole family will love! She'll learn more about baking as well as how yogurt is made.

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.

Total alkalinity and pH personal care products are controlled to prevent skin irritation. Learn more about basic and acidic substances in this science project.

Learn how to make a trick-or-treat bag for Halloween. See how to make a decorative trick-or-treat bag with this Halloween craft tutorial.

Learn how to make a ping pong ball anemometerâa device used to measure wind speedâin this free science fair project idea.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

This art exercise is great way to help kids learn how to see just like a professional painter, while experimenting and having fun with monochromatic color!

This year for Valentine's Day, you and your child can bake up a batch of classic red velvet cupcakes and learn more about the history of this vintage treat.