Kids explore how a single movable pulley can confer a mechanical advantage over a fixed pulley in this cool engineering science fair project for 2nd grade.

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

Test whether plants can grow without sunlight and water.

This science fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

In this science fair project, students examine under what conditions individual plants release seeds and how far the seeds are released.

Find out whether putting something on top of a plant will inhibit its growth.

This science fair project idea explores whether a plastic slinky works as well as a metal slinky when walking it down the stairs.

Find out whether packaged seeds actually do expire in this new science fair project idea.

Will potatoes spud or sprout faster in dry, dark, or cold conditions? Find out in this science fair project idea!

Explore if planting seeds in a certain direction will affect how fast it germinates.

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.

This science fair project demonstrates the magic of arches by challenging students to stack telephone books on top of eggs without breaking them.

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

Examine whether distilled water, spring water, or regular tap water yield faster plant growth.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

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