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.

4th graders construct an ocean food web to learn about consumers and trophic levels, food webs, and food chains in this cool ecology science fair project.

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

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

Discover whether the â5-second ruleâ is effective at determining whether food is still safe to eat after being dropped on the ground.

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

In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.

Determine whether butterflies like to drink sugar water, salt water, or plain water.

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.

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

In this experiment, young ecologists will learn about a type of edge effect: how trees and plants at the edge of a forest can act as a weed filter.