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.

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

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!

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

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

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

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

Determine how good we are at direct and indirect observation.

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

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!

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

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

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.

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 the relationship between personality traits and birth order effects.

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

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.

Is there any correlation between hot tubs and high blood pressure? Kids discover the answer (and its biological basis) in this cool science fair project.

Easy and cool middle school science fair project on ripening process of fruits and measures you can take to prevent fruits from rotting and delay ripening.

This science project teaches young students about germs, bacteria, and the importance of washing their hands. Students will test what is the best way to wash.

Determine which factors promote the greatest memory interference. Administer test, time how long it takes subjects to complete different tasks.

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

Formulate a hypothesis and use the scientific method to determine the guess what is hidden in a box. Test abilities of volunteers, without opening box.

The actual factors affecting friction may surprise you! Learn about the coefficient of friction and put some trigonometry into practice in this science project.

Investigate the different ways in which objects and organisms can be classified, create your own. then have volunteers classify using their own systems.

introduction to organic chemistry. study what happens when polymer molecules are mixed with borax solution.