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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.

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

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

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.

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

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.

Investigate the advantages of the use of ceramics in engines such as the tiles used in Space Shuttle. Use iron filings and magnets.

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

Construct a model of radioactive decay. Learn more about radioactive decay by modeling the process using coin flips.

Study structure of the lens found in the human eye and determine whether it is concave or convex. Prepare a ray diagram, formulate hypothesis.

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.

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 fair project idea develops an understanding through experimentation of which shapes are the most structurally strong.

The purpose of this science fair project is to investigate whether cooking seeds before planting will speed up germination and growth.

The objective of this science fair project is to determine whether drawing with the right side or the left side of your brain will produce a better picture.

Use applied math to model orbital eccentricity in this cool science fair project for 7th grade.