Future engineers, unite! Discover how to keep a sandcastleâs bridge from falling into the moat.

In this science fair project, students make their own rain gauge to measure rainfall.

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

If you're looking for something to keep your kid busy on a warm day, and give him some writing practice in the process, bring on the mud!

What's cooler than an explosion? Not much! This simple science experiment lets kids build their own pop rocket. So put on your safety goggles and let her rip.

Discover how and which salt melts ice the quickest.

Let your young scientist explore a brave new world of sound with an experiment that just requires a handful of common household items.

Kindergarten algebra is a lot different than high school. In kindergarten math, algebra means grouping like things, or noticing what doesn't belong in a set.

Children combine an acid and an alkaline substance to simulate a volcano eruption in this fun experiment.

Make a bear cave for your child to play and explore, learning about bears and winter hibernation.

Plant a mini herb garden and teach your child about science and nature.

In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.

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!

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!

What causes sound? Here's a simple science experiment that adds a visual element to the science of sound to help kids better understand this tricky concept.

Help your child experiment with the combination of acid and baking soda by making these homemade bath bombs!

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

This activity provides a solution to all those leaves on your doorstep, while also giving your child a fun science lesson.

Develop your child's green thumb with this easy planting activity. These plants are guaranteed to grow fast and are "brown-thumb" proofed!

Kids will explore the corrosiveness of soda in this cool science fair project by leaving pennies submerged in soda overnight.

This fun, think-outside-the-box activity introduces kids to gravity and other basic scientific concepts as they construct an impressive marble run!

Make your own helicopter using a paper clip and a sheet of paper. Hold the spinner up in the air, let it go, and watch it spin gracefully to the ground.

Help your first grader design and create his very own bird feeder out of an empty milk carton.

Have you ever noticed the way a dropped stone makes a fun pattern in a pond or lake? What's the science behind these splashy occurrences?

You and your child can create this beautiful butterfly mobile for hanging anywhere in the home (and learn about this magical creature while you're at it).

This science fair project idea examines whether boys and girls differ in reflexes.

Can a toy car determine the strength of a magnet? In this cool magnet science fair project, young scientists will learn how to measure the strength of a magnet.

Create your very own scented hand sanitizer that will help your child to keep those nasty germs at bay!

This educated-guessing game is great for preschoolers. This activity helps your child work on her reasoning skills.

Take a dive into the candy jar with this yummy science experiment.