In this fun science fair project, make two different scale models of our solar system using Astronomical Units and planets' relative size!

In this cool science experiment, learn about magnetism and poles, and test magnet strength to find out if two magnets are twice as strong as one.

This project compares the strength of one, two, and three-ply toilet paper.

This science fair project idea builds models of various types of bridges and then determines which bridge design is the strongest.

What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.

Check out this cool science fair project idea that models the behavior of the cold desert plants: xerophytes and halophytes.

This science fair project compares the allelopathic affects of juglone, a chemical agent produced by the Black Walnut tree, on two plants.

In this science fair project, young children discover what happens when two fluids that have different densities get together.

In this experiment, your child will create two compost bins and see if he can determine what attracts fruit flies.

Milk is made of water and fat; but how can you separate the two? Find out in this color changing milk experiment.

In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.

This classic children's game-connecting two cups with a string-demonstrates sound's ability to travel through air vs through a solid.

What is biodiversity? Kids will study different areas of their backyards to see which is the most diverse to learn about biodiversity and random sampling.

This experiment challenges students to forecast the weather based on the surrounding areas' weather.

In this science experiment, observe convection currents forming and learn about how heat energy moves in liquids from hot to cooler areas through convection.

This science fair project idea highlights decomposition rates by comparing how long it takes an item to decompose in a compost pile vs. a landfill.

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.

Will the shape of an ice cube impact how fast the ice melts?

This science fair project idea deals with the qualities of shade on a sunny day.

In this physics project, learn about the relationship between light intensity and distance using a laser pointer, flashlight, and graph paper!

What is mulch? Kids will provide soil with a wet blanket of mulch and see if that helps keep drought-stricken soil damp.

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

Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.

This science fair project idea explores how far the âdanger zoneâ is from different types of caution signs.

The objective of this science fair project is to set up a compost bin to convert food scraps and organic waste.

This biodiversity project examines the biodiversity in your own backyard.

examine how passive solar heating works, measure temperature in a parked car on a sunny day. ways to use passive solar heating as an alternative, energy

Kids conduct a simple birdseed experiment to figure out what kinds of birds live nearby in this fun science activity.

Science fair project that examines the different types of precipitation, evaluates the density of snow and calculates the ratio of snow-to-liquid.

Science fair project that compares the biodiversity of fungi in different ecosystems by identifying species of fungi.