Soil is made up of different layers. How far down do you need to dig to find the soil horizon, or the place where bits of leaves and branches become soil?

Even your first grader can get involved in the lighting of the Kwanzaa Kinara with this clever flameless Kinara project!

Check out this cool science fair project idea to explore non-chemical means of preserving fruits by using thermotherapy.

Discover whether cheap saline solution bottle cleans and disinfects just as well as more expensive kinds formulated with different ingredients.

Kids construct a single fixed pulley system to learn how pulleys can make work easier in this cool physics and engineering science fair project idea.

Take a closer look at your furry friend (or the furry friend of a neighbor -- with permission) to discover if communication exists between cats and humans.

Science fair project idea that examines different physical characteristics of a chosen animal. Make educated guesses about evolution based on animal's form.

This activity is a great way to engage learners in Earth Day celebrations while cultivating skills around nonfiction comprehension and research writing.

This science fair project idea identifies the properties of soap bubbles and invents a new or improved bubble solution.

Here are 3 inexpensive ways for kids to make their own beads, from scratch.

Celebrate your little one's move to big kid school by throwing a very special graduation party complete with friends, crafts, and lots of energetic fun.

Help your little one figure out the differences between the worlds of air, land and water, a huge step in understanding how our environment works.

First graders will love practicing addition with this fun math game.

Watch pre-packaged seeds and seeds taken from inside fruits and vegetables grow. Which ones will grow faster? Read more in this science fair project idea.

Practice multiplication facts and geography at the same time in this fun third grade math card game.

In this science fair project, students create their own miniature salt flats at home.

Create a brush pile to help wintering wildlife stay warm and cozy through the winter.

Here's a guide to help you design a challenging pool obstacle course for your elementary school children with ordinary pool toys and household objects.

Make a paper jack-o'-lantern treat bucket this Halloween! While crafting, your kid will learn about the process of creating self-standing sculptural objects.

Help your first grade reader understand verbs by doing them in this boisterous playground relay race.

Here's a fun activity to help build thinking skills in young first grade scientists, and to encourage them to have a blast exploring the mass and volume.

This project examines the concentration of dissolved oxygen in water, with and without oil.

Explore aromas with your child and help boost her brain power with some fun and interactive science activities.

This science experiment tests if dog saliva can really help heal wounds.

Kids learn how to make a simple electric motor in this great engineering science fair project that teaches them how current generates its own magnetic field.

Here is a fun holiday exercise to reinforce your grade-schooler's understanding of adjectives from adverbs while she's away on winter break!

In this experiment, you will be making your own paper flashlight by conducting electricty with graphite.

Looking for a noisemaker that's more musical than your kid's typical banging and clanging? Make a paper plate tambourine!

This taste buds science experiment demonstrates how strongly our sense of smell controls what we taste.

Put those paper bowls to good use! Enjoy a preschool classic craft, great for passing the time on a rainy afternoon.