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.

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!

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.

This trick uses vertical and horizontal forces to help your child to push apart your hands apart, no matter how hard you try to keep them together!

We all know that the Moon has different phases, but it can be hard to figure out why. Try this activity to see how the Moon's phases really work.

Before your treat your child (and yourself!) to a yummy snack, help her learn a little about Sir Isaac Newton's First Law of Motion!

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

Uh-oh! Is that a pill sitting on the counter or a piece of candy?

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.

Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?

Instead of the traditional egg hunt, try this creative variation that will result in a beautiful Easter garden.

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.

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

How do we know that air exists when we can't see it, taste it, or touch it? Here's a classic experiment that will teach your kid some basics of aerodynamics!

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

The goal of this golf science fair science fair project is to determine whether the temperature of a golf ball affects its elasticity and its rebound.

Learn about different fern fronds with your third grader as you create lacy, natural decorations on your Easter eggs this year.

Try this fun and simple activity to help nurture your child's observation skills and nourish a growing love of science!

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.

This science exploration lets your first grader see how eggs can provide a perfect environment for a living, growing creature.

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!

In this science fair experiment, children demonstrate the relationship between the amount of stuff and the amount of pressure in a closed system.

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.