Kids learn about examples of mechanical weathering and conduct an experiment with seeds and plaster in this cool geology science fair project idea.

Perk up your front porch with this hanging vase craft, perfect for spring and for getting kids outdoors!

Many ancient cultures used the rising or setting sun to create calendars. Observe the setting sun once a week to come up with your own solar calendar!

Help your child understand surface tension by showing them how they can create a "skin" on top of water.

Some fossils have been been preserved for billions of years! Help your kid understand how fossils are created and preserved with this crafty project.

Ant behavior is closely related to light intensity. This free science fair project idea examines how fast ants dig when they are exposed to to light and dark.

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

Determine which kind of rock (igneous, sedimentary, metamorphic) has the greatest reservoir capacity, which is the ability to hold the most oil and natural gas.

Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.

Why do ants like sugar? Do ants like artificial sweeteners too? Kids find out with this great inquiry-based science fair project.

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

This science fair project teaches you about what makes persimmons so tart and how astringency can be removed by studying the effect of tannins on fruit.

Learners hypothesize about and experiment with soil erosion in this hands-on activity.

This science fair project idea measures the growth of bread dough and finds out how long it takes for the dough to stop rising.