Showing Results for hard

This science fair project on testing water hardness is a great introduction to practical chemistry. Test and learn the difference between hard and soft water.

It's not actually that hard to get energy from garbage! Kids learn how to make biogas in the form of methane with this cool and easy science fair project idea.

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.

Your child will learn science and make a fun new malleable toy with this balloon sandbag science experiment.

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

In this science fair project, students use the streak test to tell minerals apart from each other.

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

This is a fantastic and easy science experiment where kids will learn about elasticity by testing how high bouncy balls of different materials can bounce.

In this science fair project, learn how a mineral streak is made and how it can help identify an unknown mineral.

In this experiment, you'll make a seafloor spreading model to learn more about how plate tectonics work and create mid-ocean ridges.

This science project challenges students to learn about and classify weeds and discover new practical uses for weeds.

Wondering how we know that air is there? Here's a quick and easy experiment that proves that air may be thin, but it's not too wimpy to block your shot!

Explore how sound waves are reflected and absorbed by producing echoes. Analyze which locations produce echoes.

Have you ever noticed the ridges on a dog's nose? In this project, we take several dogs' nose prints and discover just how unique they are!

This project examines whether playing music during class helps students learn or if it distracts students from learning.

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

April showers may bring May flowers, but your child can preserve the beauty of spring's bounty all year long with this simple craft project!

Is it amplitude? Weight? Length of string? Kids will discover what factors changing the period of a pendulum depends on in this fun and easy physics experiment.

Get your hands on a concoction that breaks the rules about what's a solid and what's a liquid.

This science fair project idea produces sounds by creating vibrations using different objects.

The rock cycle will come alive for your child when he uses broken crayons to create the three basic rock types.

Science fair project which tests various sedimentary, igneous and metamorphic rocks to find out whether one rock family is stronger than the others.

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

An home science experiment for older students that teaches about the science behind heat.

In this activity, you'll not only make your own bouncy balls at home, but your child will also learn how polymers are made.

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

This science fair project idea investigates the ability of different whitening toothpastes to whiten teeth.

How sensitive is your skin? Here's a fourth grade science experiment that lets your child figure it out.

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