Create a self-portrait from natural materials in this collage craft activity!

This science fair project idea explores how length affects the weight a bridge can hold.

This fun marbled paper craft uses things you're likely to have around your house, and it teaches kids some simple chemistry too!

This activity works well with a group or just with a parent and child, and it can make a great party game since it's both fun and inexpensive.

In this Halloween-themed activity, young learners will find out what happens when they mix two household items together to create a surprising chemical reaction.

This science fair project idea determines if the size of the parachute will change the rate at which an object falls.

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

Bring the fun of gardening indoors! By stuffing a simple pair of pantyhose with a few grass seeds on top, your child can grow her very own plant pet.

Create a mini plant habitat with your kid to help teach him what it takes to make an ecosystem work.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

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!

Learn about this simple machine and make a pulley of your own to use for fun science trials.

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

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 balloon-powered car project is a great way for your kid to learn about energy and how it can be used efficiently.

Your kid will be captivated as she watches liquids change color before her very eyes during this fun science project that introduces some chemistry basics.

In this science and engineering activity, children will explore types of tunnels and their purposes and then design and build a tunnel of their own.

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

Here's a fun math and science activity: help your child explore four different kinds of measurement, using their hand and a few simple household tools.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.