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Check out this cool science project idea to learn about rocks and explore the cycles of formation, breakdown, and reformation of rocks in the Earth's crust.

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

The goal of this science fair project is to assess the acidity levels of common food and household products using pH test strips.

Check out this science project idea that will have your kid investigate how dots (also known as pixels) are used to create digital photographs.

Use chemical analysis to identify a variety of mystery powders that look the same but actually have very different properties.

Science fair project that compares the ecology of different soil samples by identifying which sample has the most invertebrates living in it.

In this experiment, kids will see if pruning tomato plants makes them more fruitful and learn about the factors that contribute to a plant's fruit production.

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.

Observe corn seed germination to learn about dicots and monocots and how plants grow from seeds to seedlings to full-grown plants!

Give your local birds a treat — and your young birdwatcher some fun — with this simple DIY bird feeder.

This science fair project demonstrates the "power of conformity".

Check out this cool science fair project idea to explore the relation between onions and eyes and how to prevent eyes from tearing while cutting an onion.

In this exciting and empowering challenge, your child will construct a bridge using marshmallows and toothpicks!

In this challenge, students are tasked with creating a car that can be powered by a balloon!

Future whistleblowers can learn about product safety standards with this exercise in writing and researching.

Check out this cool and free middle school science fair project idea on how to make a solar oven.

In this fun science fair project idea learn about universal solvents and solutes and find out the solubility of several common liquid substances.

Explore the relationship between personality traits and birth order effects.

Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!

Determine how good we are at direct and indirect observation.

In this cool physics experiment, use double plane mirrors at various angles to learn about light reflection. Then, see if you can solve a puzzling problem!

Test your friends to find out if you can replicate the placebo effect's incredible results.

Why do plants wilt? Kids will learn to think critically about what environmental factors affect plants, and what plants need to survive.

It's rhyme time! With this science fair project idea, your child will find out which words can be considered easy rhyming words, and why.

Explore this fun middle school science fair idea to learn about photosynthesis and the key role of light in the growth of green plants.

This experiment will evaluate bacterial content on toothbrushes before and after different cleaning methods to determine which method of disinfecting is best.

This science fair project uses paper chromatography to investigate whether black, brown, orange, and purple are pure colors or mixtures of other colors.

Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.

This science fair project idea raises awareness of a real ecological issue.

Determine if certain colors of light are more effective for photosynthesis. Plant seeds in cardboard boxes with different light, record visible growth.