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

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

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.

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 fun science fair project idea for middle school students to learn about the effects of temperature on the density of a gas such as air.

This fun middle school science fair project idea helps student discover the concepts behind deep sea diving and how Cartesian divers work.

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

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

Children have a naturally inquisitive mind. Foster their curiosity with a walk through an autumn field or park to answer age-old “why” questions. As you walk with your child, you can encourage them to ask questions.

In this challenge, students are tasked with creating a model roller coaster that a marble can travel through.

Students will investigate the thermal conductivity of metals by learning how to measure thermal conductivity with this fun and easy science fair project idea.

This science experiment examines the role of fat in food, especially in making bread rise and whipping cream.

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 about the Atwood Machine and Newton's 2nd Law with a pulley and masses of different weights in this physics science project.

The objective of this science fair project idea is to determine if sound travels best through the air, water or a solid.

Explore the relationship between personality traits and birth order effects.

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!

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 project examines the concentration of dissolved oxygen in water, with and without oil.

The goal of this science fair project is to evaluate the effect of heat on sound wave frequency.

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