Third Grade Resources

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3rd grade
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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 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 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 Project
How Much Radiation is in Your House?
How Much Radiation is in Your House?
Science Project
How Much Radiation is in Your House?
This study evaluates if electronic devices commonly found in most households emit radiation, and if they do, how much?
3rd grade
Science Project
Is Organic Better?
Is Organic Better?
Science Project
Is Organic Better?
The purpose of this study is to determine if people can tell the difference between organic and conventional food from looking at, smelling and tasting it.
3rd grade
Science Project
Musical Glasses
Musical Glasses
Science Project
Musical Glasses
In this project students experiment with making music using only glasses of water.
3rd grade
Science Project
Is There a Relationship Between Tempo and Genre?
Is There a Relationship Between Tempo and Genre?
Science Project
Is There a Relationship Between Tempo and Genre?
Which music genres have the fastest tempos? The slowest? This experiment determines if there's a relationship between beats per minute in a song and its genre.
3rd grade
Science Project
Warm, Warmer: How Does Exercise Change Body Temperature?
Warm, Warmer: How Does Exercise Change Body Temperature?
Science Project
Warm, Warmer: How Does Exercise Change Body Temperature?
In this science fair project, we'll use a liquid crystal thermometer to find out whether exercising makes a difference in people's temperature.
3rd grade
Science Project
What Is Persistence of Vision?
What Is Persistence of Vision?
Science Project
What Is Persistence of Vision?
What is persistence of vision? With this hands-on science fair project idea, students will demonstrate this cool and dramatic phenomenon in their own classroom.
3rd grade
Science Project
Sir Whiskers Division Story
Sir Whiskers Division Story
Story
Sir Whiskers Division Story
Kids learn all about division vocabulary and strategies with this silly story about a cat crew.
3rd grade
Math
Story
Serial Commas: The Misspellbook Story
Serial Commas: The Misspellbook Story
Story
Serial Commas: The Misspellbook Story
Kids practice identifying correctly used commas in a series within the context of this silly wizard story.
3rd grade
Reading & Writing
Story
Natalia's Magic Marker: Apostrophes in Possessive Nouns
Natalia's Magic Marker: Apostrophes in Possessive Nouns
Story
Natalia's Magic Marker: Apostrophes in Possessive Nouns
Kids will learn possessives in this interactive story.
3rd grade
Reading & Writing
Story
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 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
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 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 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 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
Create Your Own Earth Model
Create Your Own Earth Model
Science Project
Create Your Own Earth Model
In this project, you'll build a model of the earth, complete with all seven continents and four major oceans.
3rd grade
Science Project
Does Hot Water Freeze Faster Than Cold Water?
Does Hot Water Freeze Faster Than Cold Water?
Science Project
Does Hot Water Freeze Faster Than Cold Water?
Most people assume that cold water freezes more quickly, but could that be false? Does hot water freeze faster than cold water? Let's find out!
3rd grade
Science Project
Crayon Rock Cycle Experiment
Crayon Rock Cycle Experiment
Science Project
Crayon Rock Cycle Experiment
Did you even wonder why some rocks are round and smooth while others are broken up into small pieces?
3rd grade
Science Project
Spider Science: Exploring the World of Webs
Spider Science: Exploring the World of Webs
Science Project
Spider Science: Exploring the World of Webs
Spiders don't go to grocery stores or fast food chains to get their food -- they set up traps and wait for their food to come to them!
3rd grade
Science Project
Bee Homes: Which Nest is Best?
Bee Homes: Which Nest is Best?
Science Project
Bee Homes: Which Nest is Best?
Set off an a science adventure as you prepare a row of bee homes for your new visitors.
3rd grade
Science Project
Capillary Action Experiment
Capillary Action Experiment
Science Project
Capillary Action Experiment
Is it magic? No...it's the amazing, gravity-defying capillary action experiment! Kids will love this dramatic and enlightening science fair project.
3rd grade
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.