3rd Grade Science Fair Projects

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205 filtered results
3rd grade
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How to Tell Time by the Sun
How to Tell Time by the Sun
Science Project
How to Tell Time by the Sun
Learn how to tell time by the sun with this cool science fair project idea that tracks how the accuracy of a sundial changes over time.
3rd grade
Science
Science Project
Rust Chemistry: How Does Rust Form?
Rust Chemistry: How Does Rust Form?
Science Project
Rust Chemistry: How Does Rust Form?
How does rust form? Kids will learn about the roles oxygen, water, and electrons play in rust chemistry in this cool science fair project idea.
3rd grade
Science
Science Project
Plastic Wrap Science Fair Project: Polymer Permeability
Science Project
Plastic Wrap Science Fair Project: Polymer Permeability
In this plastic wrap science fair project, you'll learn about polymer permeability and find out which plastic wrap keeps food from dehydrating best.
3rd grade
Science
Science Project
Paper Towel Science Project: Capillarity
Paper Towel Science Project: Capillarity
Science Project
Paper Towel Science Project: Capillarity
This easy and inexpensive paper towel science project introduces kids to important physical concepts like cohesion, adhesion, and capillarity.
3rd grade
Science
Science Project
Factors Affecting Solubility
Science Project
Factors Affecting Solubility
Here is a fun middle school science project on factors affecting solubility. Learn how dissolved solids can "crash out" to form crystals when conditions change.
3rd grade
Science
Science Project
Coriolis Effect and Hurricanes
Coriolis Effect and Hurricanes
Science Project
Coriolis Effect and Hurricanes
Learn about the role of Earth's rotation on the Coriolis Effect and hurricanes in this science project. Model the Coriolis Effect on a hurricane's direction.
3rd grade
Science
Science Project
Third-Class Levers in the Human Body
Science Project
Third-Class Levers in the Human Body
Did you know your body is full of simple machines? This project looks at one of the third-class levers in the human body: your arm!
3rd grade
Science
Science Project
Does Length Have an Effect on Speed?
Does Length Have an Effect on Speed?
Science Project
Does Length Have an Effect on Speed?
This science fair project idea explores if the length of the string that an object is suspended on has an effect on how fast or slow it swings.
3rd grade
Science
Science Project
Keep the Boat Afloat
Keep the Boat Afloat
Science Project
Keep the Boat Afloat
This science fair project idea examines the reason boats are shaped and engineered.
3rd grade
Science
Science Project
Talking to Plants
Talking to Plants
Science Project
Talking to Plants
This science fair project idea explores whether talking to a plant will help it grow.
3rd grade
Science
Science Project
Upside-Down Plants
Upside-Down Plants
Science Project
Upside-Down Plants
This science fair project idea examines whether plants are still able to grow normally if they are turned upside-down.
3rd grade
Science
Science Project
How to Stop Soda From Exploding
How to Stop Soda From Exploding
Science Project
How to Stop Soda From Exploding
This science fair project investigates whether tapping the top or the side of the can will stop a vigorously-shaken can of soda from exploding.
3rd grade
Science
Science Project
Does Hot Water Boil Faster Than Cold?
Does Hot Water Boil Faster Than Cold?
Science Project
Does Hot Water Boil Faster Than Cold?
Discover whether cold or hot water from the faucet will boil faster on the stove.
3rd grade
Science
Science Project
What Animals are Most Popular? A Data Analysis Project
What Animals are Most Popular? A Data Analysis Project
Science Project
What Animals are Most Popular? A Data Analysis Project
What animals are most popular? This project affords practice in data-collection, record-keeping and data-analysis through the investigation of this question.
3rd grade
Science
Science Project
The Mohs Test: How to Compare the Hardness of Minerals
The Mohs Test: How to Compare the Hardness of Minerals
Science Project
The Mohs Test: How to Compare the Hardness of Minerals
This science project uses Mohsâ Hardness Test to show kids how to compare the hardness of different types of minerals.
3rd grade
Science
Science Project
Popcorn Pumice: Exploring Different Rock Densities
Popcorn Pumice: Exploring Different Rock Densities
Science Project
Popcorn Pumice: Exploring Different Rock Densities
In this popcorn experiment, students can explore how two things made out of the same material can have very different appearances and densities.
3rd grade
Science
Science Project
How do Sedimentary Layers Form?
How do Sedimentary Layers Form?
Science Project
How do Sedimentary Layers Form?
In this science fair project, students discover how sedimentary layers form as sediments like mud, silt and sand settle over time.
3rd grade
Science
Science Project
Streak Test
Streak Test
Science Project
Streak Test
In this science fair project, students use the streak test to tell minerals apart from each other.
3rd grade
Science
Science Project
How Does Pressure Change Minerals?
How Does Pressure Change Minerals?
Science Project
How Does Pressure Change Minerals?
In this science fair project, students learn how pressure can make the minerals in a rock line up in the same direction and form bands and foliation.
3rd grade
Science
Science Project
How Do Seeds Hitchhike?
How Do Seeds Hitchhike?
Science Project
How Do Seeds Hitchhike?
This science fair project examines how seeds hitchhike on animals and clothing.
3rd grade
Science
Science Project
Water and Mosses
Water and Mosses
Science Project
Water and Mosses
This science fair project will help students learn about non-vascular plants, such as mosses.
3rd grade
Science
Science Project
Demonstrating Photosynthesis: Writing in Grass
Demonstrating Photosynthesis: Writing in Grass
Science Project
Demonstrating Photosynthesis: Writing in Grass
This fun experiment provides a concrete and visually striking illustration of photosynthesis.
3rd grade
Science
Science Project
What Lives in the Air Conditioner?
What Lives in the Air Conditioner?
Science Project
What Lives in the Air Conditioner?
In this science fair projects, students will grow out the bacteria that collect on air conditioner filters.
3rd grade
Science
Science Project
Taste Perception
Taste Perception
Science Project
Taste Perception
This project examines whether people's taste perception is influenced by what they see.
3rd grade
Social studies
Science Project
Does Adding Salt to Pasta make it Cook Faster?
Does Adding Salt to Pasta make it Cook Faster?
Science Project
Does Adding Salt to Pasta make it Cook Faster?
Did you ever add salt to pasta? Did it help cook the pasta faster? If not, find out in this science fair project idea.
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.