Third Grade Resources

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3rd grade
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How to use Colored Filters to Send Secret Messages
How to use Colored Filters to Send Secret Messages
Science Project
How to use Colored Filters to Send Secret Messages
Kids learn how to manipulate additive and subtractive colors to send secret messages with red colored filters in this cool science fair project idea.
3rd grade
Science
Science Project
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
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
Factors Affecting Solubility
Science Project
Factors Affecting Solubility
Kids discover what a homogeneous mixture is by adding sugar to distilled water and identify the various factors affecting solubility.
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
How to Separate Salt from Water
How to Separate Salt from Water
Science Project
How to Separate Salt from Water
In this free science fair project, learn how to separate salt from water using heat. A great science project for elementary school kids.
3rd grade
Science
Science Project
Why Does the Moon Glow?
Science Project
Why Does the Moon Glow?
The moon doesn't produce its own light, so why can we see it shining in the sky? Learn about reflection and planetshine in this fun and easy science project!
3rd grade
Science
Science Project
The Limewater Carbon Dioxide Test
The Limewater Carbon Dioxide Test
Science Project
The Limewater Carbon Dioxide Test
Kids will conduct a cool limewater carbon dioxide test that can be performed with common household materials to learn about the chemistry of this common gas.
3rd grade
Science
Science Project
The Rings of Saturn: A Scale Model
The Rings of Saturn: A Scale Model
Science Project
The Rings of Saturn: A Scale Model
Saturn is the ringed planet in our solar system, a gas giant with rings made of ice and dust. Let's make a cool scale model with an old CD and some glitter!
3rd grade
Science
Science Project
Complete Circuit: How Does a Flashlight Work?
Complete Circuit: How Does a Flashlight Work?
Science Project
Complete Circuit: How Does a Flashlight Work?
How does a flashlight work? Kids will make a complete circuit and explore how voltage contributes to brightness with this science fair project idea.
3rd grade
Science
Science Project
How Does Frost Form?
How Does Frost Form?
Science Project
How Does Frost Form?
How does frost form? How fast does it form? Do this simple science project using a plastic glass, rock salt and some water to learn about deposition.
3rd grade
Science
Science Project
How Do Icicles Form?
Science Project
How Do Icicles Form?
How do icicles form and what do they look like? Do this free science fair project and watch the formation of icicles occur right before your eyes.
3rd grade
Science
Science Project
Can Crystals Show Color Mixing?
Can Crystals Show Color Mixing?
Science Project
Can Crystals Show Color Mixing?
This science fair project idea determines if crystals will absorb food dye and if colors will mix by the process of diffusion.
3rd grade
Science
Science Project
Tangential Velocity and Circular Motion Experiment
Science Project
Tangential Velocity and Circular Motion Experiment
In this simple circular motion experiment, you'll observe tangential velocity and learn about how acceleration and centripetal force affect an object.
3rd grade
Science
Science Project
Greenhouse Project
Greenhouse Project
Science Project
Greenhouse Project
This science fair project idea teaches how the gases and pollution in the air affect the earth's atmosphere temperature.
3rd grade
Science
Science Project
Conductor or Insulator?
Conductor or Insulator?
Science Project
Conductor or Insulator?
This science fair project idea determines what household items are good conductors of electricity.
3rd grade
Science
Science Project
Gymnosperms: Pine Cone Experiment
Gymnosperms: Pine Cone Experiment
Science Project
Gymnosperms: Pine Cone Experiment
Gymnosperms are coniferous trees that reproduces using pine cones to spread seeds. Check out this simple pine cone experiment to learn about the process!
3rd grade
Science
Science Project
Coniferous Forest Plant Adaptations
Coniferous Forest Plant Adaptations
Science Project
Coniferous Forest Plant Adaptations
Climates with more snowfall have more coniferous forests and fewer deciduous ? Learn about how pine trees in a coniferous forest adapted to withstand snow.
3rd grade
Science
Science Project
Forest Food Pyramid Project
Forest Food Pyramid Project
Science Project
Forest Food Pyramid Project
Learn how to make a food pyramid with animals in a a coniferous forest ecosystem around your home.
3rd grade
Science
Science Project
Savanna Flora and Fauna
Savanna Flora and Fauna
Science Project
Savanna Flora and Fauna
Learn about savanna flora and fauna in this science project! Take a look at characteristics of tropical grassland plants and animals that help them survive.
3rd grade
Science
Science Project

Third Grade Resources

Looking for third grade help? These third grade resources offer multiple ways to support learners, from lesson plans to activities to worksheets. We also offer interactive games that work times tables. For those teaching third grade, you may want to check out our collection of exercises. Those working with older learners should browse our fourth grade resources.

Resources to Guide Third-graders to the Next Level

Third grade marks the center of elementary education. New adult teeth have replaced the baby ones that were there just the year before. With bigger teeth come bigger challenges as school starts gets more serious. The resource library is stocked with popular skills-based games, comprehensive workbooks, and easy-to-follow lesson plans that will help third-graders rise to the occasion.

Hundreds of highly-rated worksheets created by expert educators are available for download in the library. The activities run the gamut of the third-grade curriculum with lessons on fractions, multiplication and division, word problems to test comprehension and figurative language practice.

Guided lesson plans with suggested time instructions help parents and teachers effectively execute comprehensive exercises. Subjects range from root word prefixes to the difference between facts and opinions. The alluring activities have practical, real-world purposes that third-graders can take beyond the study desk.

In addition to classic worksheet and lesson plan methods, the Learning Library’s entertaining online games, hands-on activities, and interesting science projects add a layer of engagement to education that helps growing brains absorb and retain new information.