In this simple and social activity, children use size comparison skills to find objects in nature that are bigger, smaller, longer, and shorter.

In this science fair project, apply the principles of leverage and force by building six simple machines designed to set weights in motion.

In this fun guessing game, your child uses his sense of smell and taste to figure out what is in the container. Here's how to play:

Step into the fantastic world of colors with a project that explores what shade you -- and your friends -- like best.

In this science fair project, students focus sunlight with a magnifying glass and trap shorter waves to melt ice.

Science fair project that determines whether tapping a pomegranate with a spoon helps it release its seeds.

Introduce your child to the importance of preserving the world's biodiversity by turning a lesson on endangered species into a fun game for the whole family.

In this experiment, students will create their own version of coquina, a sedimentary rock thatâs formed by seashells and sand, cemented by seawater minerals.

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

This science fair project idea investigates how magnetism can defy the force of gravity.

Make scented sensory cloud dough. Add it to a sensory table, activity station, or put it in a baggie for extra at-the-park entertainment!

Science fair project in which you will examine how crystals are formed by creating your own crystal using charcoal briquettes, salt, and ammonia.

Try this activity with your child to explore what happens to rain (and the living things that need it) when it becomes polluted.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!

In this experiment, students will discover how heat and pressure turn clay into slate, phyllite, and finally schist.

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

Help your kindergarten scientist discover relative size, density, and buoyancy with this fun, pumpkin science project!

When you rub a balloon on your head, your hair stands up; but is that true for everyone? Does hair color affect static electricity?

Grow potatoes in a plastic bag—easy to grow and harvest, and yummy to eat!

This science fair project idea studies which kind of rock (sedimentary, igneous, or metamorphic) is most damaged by frozen water.

Encourage your child to think outside the bathtub by making her very own handmade soaps! Perfect as a present, a decoration, or just to pamper herself.

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

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Let your fabulous crafter use their favorite flowers, fruits and herbs to whip up a delicious perfume that they can proudly present to a friend or a loved one.

Delight your budding scientist with this cool physics magic trick and teach her some basic physics concepts while you're at it!

There are many benefits to bugs and insects. This science project shows how cockroaches, termites, and other critters benefit our planet.

It's a rare kid who doesn't like a sandbox. Next time you're out digging, build in some earth science, too.

Make a backbone model to explore human anatomy and life science.