Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.

This science fair project idea identifies and understands adaptations in birds.

Kids build a rainforest food web to explore trophic levels in this cool science fair project for 4th grade.

What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.

Bring back the groovy memories by making shrinky dinks using household materials, while learning about the science of plastics. Here's how to get started:

Plant a mini herb garden and teach your child about science and nature.

This science fair project idea investigates the difference in reaction times between boys and girls.

In this design thinking activity, your child will choose an animal to research, learn about the animal’s habitat, and then replicate the animal's habitat using household items.

You and your child can create this beautiful butterfly mobile for hanging anywhere in the home (and learn about this magical creature while you're at it).

Wind is an important source of renewable, green energy. The purpose of this science fair project is to build and operate a windmill generator.

The goal of this science fair project is to analyze differences between the taste and texture of frozen and fresh food.

Does skin thickness really decrease fruit spoilage? Find out in this science fair project idea!

Here's a guide to starting a community clean-up project from scratch.

In this microwave plant experiment, find out whether microwave radiation will affect radish seed germination. Will it help or hinder the plants' growth?

Take this "paper plate snack test" with your child for a hands-on lesson in making healthier choices to teach your child about what's in his food.

In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.

Do plants get crowded? Have your curious kid investigate how plants respond if they're forced to grow together in a confined space.

The Galileo inclined plane physics experiment was one of the first ways scientists calculated acceleration due to gravity. Do it yourself in this project!

Experiment with buoyancy to learn how a submarine rises and sinks in this classic science experiment.

How can you tell the difference between a spider and an insect? Your child will find out as he makes a tray of yummy creepy crawly snacks.

Here's an experiment that will have your child experimenting with cake ingredients to learn about the chemical reactions that happen when a cake's in the oven.

Children will learn why and how to compost as they help with the process of filling their compost, turning it, and observing the changes that occur.

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.

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

The purpose of this science fair project is to study the properties of sugar and examine individual preferences for sugar and other sweeteners.

Free science fair project idea that examines the ergonomics of your environment. Redesign your living space to be better suited to your lifestyle.

This activity is a great way to stretch the boundaries of your child's imagination and build up important critical thinking skills.

This science fair project idea lets you build your own wind tunnel and tests different models of paper airplane.

Here's a classic celery science experiment that uses celery and food coloring to demonstrate how plants absorb water.

Consult mechanics, automotive specialists for advice. Build a real engine or a scale model. Test and demonstrate its mechanical properties.