Learn how to make an anemometer with step-by-step instructions in this cool science fair project idea for 4th grade.

This light bulb science project includes step-by-step instructions for testing the heat from different light bulbs.

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

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

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

Show your kids the power of baking powder by conducting a simple experiment. Make four batches of cornbread, all identical except for one thing: baking powder!

Is your child a young ornithologist in the making?

Science fair project that examines how to grow bacteria in a controlled setting, using simple materials from around the home.

In this science fair project, students will create a model of a shoreline, observe erosion and examine how jetties prevent erosion.

This kinesthetic learning activity will help your fourth grader get a firm grasp on the immensity of the solar system.

This science fair project idea investigates how the shape of an object affects drag.

Inspire your child to put on her engineer hat for the day, as she builds her very own, double-decker bridge.

This science fair project idea investigates if webbed feet help a duck (and others) swim.

Science fair project that examines the behavior of water and gravel in creek beds and the formation of sedimentary rocks.

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

This science fair project idea explores how length affects the weight a bridge can hold.

Do plants breathe? Not exactly. They do respire though! This activity will help your child with see that plants are producing the oxygen we need to survive.

Observe how your brain works while it is focused on one thing, and how it works while you are distracted by another thing.

Teach your child how to make an all-natural, yellow-brown dye, using just walnut shells and water. This deep dye can be used on textiles, art, and wood.

Science fair project that teaches you about chemical indicators and how to make your own in order to identify various mystery solutions.

In this 3rd grade science activity, you'll experiment with the little-known fourth state of matter: polymers! Mix borax with white glue and watch what happens.

This science fair project idea investigates how a bottom keel helps keep a boat from rocking back and forth.

This science fair project idea examines which type of insulation holds in the most heat.

In this fun activity, your child will create their very own solar oven to bake s'mores!

Turn an abstract lesson into a practical craft with the fun and colorful creation of dough earth layers!

What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.

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

This science fair project idea examines whether adding gelatin causes a solid to have a higher melting point and/or melt slower.

These science fair experiments demonstrate the chemistry of rust and the oxidation process.

Help your child create a magical miniature garden in the most unlikely of places: a recycled plastic bottle!