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This fun and easy middle school science fair project idea  explores the topic of pollution and demonstrates if polluted soil affect the growth of green plants.

Do Plants Experience Pollution? Will Plants Grow More or Less or be Unaffected when Grown in Polluted Soil?

Sink or swim? Calculate the density of various fruits and vegetables using water and a kitchen scale.

Sink or Swim: Calculating Density of Fruits and Vegetables

In this science experiment, your child will test the strength of hollow structures in order to understand how strong bird bones really are.

How Strong are a Bird's Bones?

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

Fungi Biodiversity

Grow potatoes in a plastic bag&mdash;easy to grow and harvest, and yummy to eat!

How to Grow Potatoes in a Bag

Learn about the fruit fly life cycle in this experiment. Capture fruit flies to examine various stages of insect metamorphosis.

Fruit Fly Life Cycle

Boys might wrinkle their noses at the thought of gardening, but we guarantee they'll like this activity! Make a recycled terrarium full of bug-eating plants.

Insectivorous Terrarium

In this plant habitats activity, children play the role of an ecologist and take surveys of different areas to discover the best habitat for dandelions.

Plant Habitats: Dandelions

This activity will introduce your child to the four different components of blood and give him a fun way to visualize its properties.

Explore the Four Components of Blood

Brine shrimp usually live in saltwater. Investigate how salt concentration (salinity) affects the rate at which brine shrimp eggs hatch.

Salinity and Hatching Brine Shrimp Eggs

Your fourth grader will be astonished to discover the significance and intricacies of his spine as he builds a model of a human vertebral column.

Make a Bendable Spinal Column Model

Make some easy homemade yogurt with your young scientist, and see what a few &#39;live&#39; bacteria can do in the right conditions!

Easy Homemade Yogurt

Does your middle school teenager have good reflexes? Gauge his reaction time in this science and math activity that requires only a yardstick and a friend.

Reaction Time Science: How Fast Are You?

Which do you prefer: real or artificial? Try this sweet little taste experiment to help your kids develop a better awareness of the food they consume.

Natural vs. Artificial: Can You Taste the Difference?

What is the best stain remover for clothes? In this fun and easy science fair project idea, students will identify the best method for laundry stain removal.

The Best Stain Remover for Clothes: Testing Laundry Stain Removal

With this science fair idea, little scientists will gain valuable insights into the physics behind throwing a baseball.

Throwing a Baseball

Incorporate some math and science thinking into your annual fall fun with this pumpkin investigation activity! Your child will have a blast investigating various ways of measuring pumpkins, making estimates, taking measurements, and recording their findin

Pumpkin Investigation

This science fair project idea experiments with spinning color wheels and optical illusions.

A Trick for the Eyes: Color Wheels and Optical Illusion Tops

Have your child build a model of a coral polyp, one of the tiny animals that composes a coral reef.

Coral Polyp

Would it hurt to skip brushing your teeth just this once? Let's find out by seeing which foods produce the most mouth bacteria.

Mouth Bacteria?

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