3rd Grade Science Fair Projects

205 filtered results
205 filtered results
3rd grade
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Factors Affecting Seed Germination
Factors Affecting Seed Germination
Science Project
Factors Affecting Seed Germination
This science fair project looks one of the most important factors affecting seed germination: water. A fun and easy plant biology experiment for 3rd graders.
3rd grade
Science
Science Project
3D Animal Cell Model
Science Project
3D Animal Cell Model
Build a 3d animal cell model with this cool science fair project, which helps kids visualize and understand the function of a cell's parts and organelles.
3rd grade
Science
Science Project
Animal Vision: Ocelli, Compound Eyes, and Camera Eyes
Animal Vision: Ocelli, Compound Eyes, and Camera Eyes
Science Project
Animal Vision: Ocelli, Compound Eyes, and Camera Eyes
In this project, learn about animal vision and different kinds of eyes: ocelli, compound eyes, and camera eyes. Find out what a jellyfish or grasshopper sees!
3rd grade
Science
Science Project
Get Cracking
Get Cracking
Science Project
Get Cracking
Science fair project that determines whether cooling eggs helps them be peeled more easily. Compare the time it took to peel each egg.
3rd grade
Science
Science Project
Does Water Temperature Cause Metal to Expand and Contract?
Does Water Temperature Cause Metal to Expand and Contract?
Science Project
Does Water Temperature Cause Metal to Expand and Contract?
Discover whether a metal will expand under hot water.
3rd grade
Science
Science Project
Can Plants Grow Without Sunlight or Water?
Can Plants Grow Without Sunlight or Water?
Science Project
Can Plants Grow Without Sunlight or Water?
Test whether plants can grow without sunlight and water.
3rd grade
Science
Science Project
Latent Fingerprints
Science Project
Latent Fingerprints
Science fair project that develops latent fingerprints on a non-porous objects by converting superglue from a solid state to a gaseous state.
3rd grade
Science
Science Project
Hot Dog Mummy
Science Project
Hot Dog Mummy
In this experiment you will replicate the mummification process by making a hot dog mummy.
3rd grade
Science
Science Project
Forensic Entomology and the Life Cycle of the Blowfly
Forensic Entomology and the Life Cycle of the Blowfly
Science Project
Forensic Entomology and the Life Cycle of the Blowfly
Study the life cycle of the common blowfly as it relates to forensic investigation. Record the first time you see flies, maggots, and eggs.
3rd grade
Science
Science Project
What Causes Dilated Pupils?
Science Project
What Causes Dilated Pupils?
What causes dilated pupils? Young scientists will find out by applying what they already know about changes in pupil size and making models of the pupil.
3rd grade
Science
Science Project
Pineapple Enzyme
Pineapple Enzyme
Science Project
Pineapple Enzyme
Certain fruits can change gelatinâs ability to set. In this experiment, kids will discover what happens when gelatin meets pineapple enzyme.
3rd grade
Science
Science Project
Too Much Sodium?
Too Much Sodium?
Science Project
Too Much Sodium?
Young scientists will investigate people's preferences for saltiness, and make some inferences about genetics and diet.
3rd grade
Science
Science Project
Understanding Absorption
Understanding Absorption
Science Project
Understanding Absorption
Understanding absorption means understanding why certain fibers and materials can absorb water! Kids will see absorption in action in this simple project.
3rd grade
Science
Science Project
Melting Ice Experiment
Melting Ice Experiment
Science Project
Melting Ice Experiment
How does salinity affect the point at which water freezes? Kids will find out by performing this cool melting ice experiment.
3rd grade
Science
Science Project
Hydrogen Peroxide and Yeast
Science Project
Hydrogen Peroxide and Yeast
Kids will learn some cool stuff about chemical reactions by determining what happens when you mix different concentrations of hydrogen peroxide and yeast.
3rd grade
Science
Science Project
Ivory Soap Experiment
Ivory Soap Experiment
Science Project
Ivory Soap Experiment
In this classic Ivory soap experiment, kids learn what happens to different types of soap in the microwave, and why!
3rd grade
Science
Science Project
Sizing Up Marshmallows
Sizing Up Marshmallows
Science Project
Sizing Up Marshmallows
Marshmallows are made of sugar, water, and air pockets. Since the marshmallow is flexible, will air pressure cause it to expand when heated in a microwave?
3rd grade
Science
Science Project
How Important Are Cats' Whiskers?
How Important Are Cats' Whiskers?
Science Project
How Important Are Cats' Whiskers?
In this experiment you observe and determine how well your cat uses his whiskers to navigate through a maze.
3rd grade
Science
Science Project
Feeding Plants
Feeding Plants
Science Project
Feeding Plants
This project explores whether plants can live and grow when "watered" with juice, soda, or milk.
3rd grade
Science
Science Project
Eureka! Volume and the Displacement of Water
Eureka! Volume and the Displacement of Water
Science Project
Eureka! Volume and the Displacement of Water
This project demonstrates the correspondence between the volume of water displaced by a submerged object and the volume of the object displacing it.
3rd grade
Science
Science Project
The Ghost in the Tube
The Ghost in the Tube
Science Project
The Ghost in the Tube
In this science fair project, you'll make a "ghost" appear in a test tube, and learn about what happens when hot water and cold water interact.
3rd grade
Science
Science Project
Where Should You Store Your Popcorn?
Where Should You Store Your Popcorn?
Science Project
Where Should You Store Your Popcorn?
This project investigates the affect of storage temperature on microwave popcorn.
3rd grade
Science
Science Project
Which Cup Best Prevents Ice from Melting?
Which Cup Best Prevents Ice from Melting?
Science Project
Which Cup Best Prevents Ice from Melting?
This project determines whether Styrofoam, paper, or plastic cups are best for preventing ice from melting.
3rd grade
Science
Science Project
The Relationship Between Toilet Paper Ply and Strength
The Relationship Between Toilet Paper Ply and Strength
Science Project
The Relationship Between Toilet Paper Ply and Strength
This project compares the strength of one, two, and three-ply toilet paper.
3rd grade
Science
Science Project
Who’s Most Ticklish?
Who’s Most Ticklish?
Science Project
Who’s Most Ticklish?
This project determines what category of person is most likely to be ticklish.
3rd grade
Science
Science Project

3rd Grade Science Fair Projects

For their 3rd grade science projects, kids begin investigating the answers to their questions much like actual scientists would. Instead of simply collecting qualitative data (describing what they observe), 3rd graders graduate to collecting and presenting quantitative data by measuring their results with increased accuracy, communicating their findings in simple charts and graphs, and describing their observations in written prose. Education.com's collection of 3rd grade science fair projects give kids the opportunity to apply their newly acquired skills to thinking critically about the world around them while having serious fun in the process. Browse our collection of third grade science projects and experiments by using the boxes to the left to filter by topic and find an exciting science project your child will be sure to love.