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.

Learn all about balance and motion as your child designs a corn maze!

This science fair project idea explores plant growth from a bulb, root, and a stem and investigates asexual plant reproduction.

In this science project, learn about water transport in plants and make a beautiful dyed floral arrangement with cohesion, adhesion, and xylem tubes!

This science fair project explores how osmotic pressure forces water through the root up into the plant.

Ever wondered how a plant drinks water? This science project will teach you how and help you create a beautiful floral display!

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.

Kids learn how to prevent erosion by growing grass. They'll test soil with grass against raw soil in this revealing science fair project idea for 4th grade.

This science fair project idea explores whether people have an innate feel for the passing of time from a few seconds to 20 minutes.

Science fair project that demonstrates the effect of detergent pollution on fresh water birds' ability to stay afloat.

This fun science project helps to investigate how much water can a plant take up and release in a certain period of time through the process of transpiration.

When you cut a flower to put into a vase, it'll eventually wilt, even with water and sunshine. But is there another scientific secret to keeping flowers fresh?

In this project, a mnemonic is used to test how it increases memory.

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.

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.

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

This project examines what types of objects burn and which burn faster and cleaner.

Check out this fun and easy science fair project idea on germination of a seed and learn to identify exterior and interior parts of a bean seed.

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

This science fair project teaches kids experimental design and how to test if subjects can really sense if they are being watched.

What's the science behind those out-of-sight roots? Find out if you can trick roots into growing in different directions.

What are the effects of fertilizer on plant growth? What's the best fertilizer type (solid, liquid or powder)? Kids find out in this science fair project idea.

The project investigates how friction affects motion by using different surface textures.

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.

This science fair project idea investigates the difference in reaction times between boys and girls.

This recipe makes bubbles that not only blow up nice and big, but do tricks and experiments! How do you do it? It's not a secret, it's science!

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

Challenge your learner to design and build a city of their own in this creative engineering activity.

Kids often ask, "how tall am I?" This science fair project seeks to determine how well kids can guess their own heights.

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.