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

The fish most kids see is usually filleted, and it's hard to see how it came from a lake or sea. This cool gyotaku activity blends life science with art!

This activity is a fun way to "go fishing" with your preschooler, while learning about the concepts of freezing and melting.

Have your kid determine if a goldfish can be conditioned to expect food the same way Pavlov's dogs did with this fascinating science fair project.

In this pinto bean germination experiment, you'll learn about how fertilizer aids in growing pinto beans into seedlings.

Help your child learn about animal classification with this fun and delicious activity.

Check out this silly game that will put your kid's animal habitat knowledge (and acting skills) to the test.

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

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

Take a trip to the pet store and then make a scrapbook to help your kindergartener learn the difference between living and non living things!

This fun activity makes use of pasta shells, paint, and glue make a crab while your child learns about this unique creature.

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

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

If your child aspires to be the next Frank Lloyd Wright, we've got some tips on building sand castles that last.

First graders are learning to think like scientists. What better place to start, then by raising tadpoles? This hands-on activity explores science in action!

Along with being an interesting science activity, dehydrated strawberries are also tasty â and healthy!

Has your child ever asked you how a submarine works? Here's a simple bathtub project that will make for a hands-on answer.

Inspire your child to learn about an amazing animal as she creates her very own polar bear habitat.

Make edible amber fossils with your second grader to explore the fascinating world of science!

Make water and clay play a little more scientific with this hands-on experiment that teaches displacement and shows how an object's shape affects its buoyancy.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

The goal of this science fair experiment is to demonstrate the effects of air pressure on objects and analyze applications of air pressure principles.

Here's a simple craft activity that can help your youngster better visualize the life cycle of a frog as a circle.

This science fair project idea compares biodiversity between drops of water.

With this cool floating rocks project, your child will get some hands-on experience with buoyancy and learn why certain rocks like pumice are able to float.

Combine your child's natural curiosity with his developing classification and writing skills by helping him create a backyard field guide.

Check out this cool science fair project idea to explore which other common animals besides scorpions glow under a UV Black light.