Times up!
Times up! You may finish answering the current question and then proceed to your score!
Sorry, you have used all of your available hints for this lesson.
Sketch Pad
Practice Limit Reached

You've reached your daily practice limit of 12 questions.

When you sign up for a free account and login, you can play all you'd like.

(Must be 18 years old to sign up.)

Award Information
Awarded to
Question Hint
Student Log In
Choose Family Member
3rd Grade Geometry Polygons Closed Shapes GameThird Grade Geometry Identify Rectangles Triangles Quadrilaterals Game

Interactive Math Activity - Polygons

Practice geometry skills with this engaging math activity all about polygons! Your third-grade students will learn to identify the properties of a polygon as they work through a variety of practical questions in this interactive math game. Upon completion of this activity, students will have gained confidence and proficiency in their basic understanding of polygons.

This third-grade geometry game presents polygons with a variety of fun, yet challenging math questions. Students may be asked to identify whether the given shape is a polygon. They may be asked how many sides or angles the given polygon has. Students may be required to choose which shape is not a polygon. Or students may be required to state how many pairs of parallel sides the given shape has, as well as how many right angles it has. If students get stuck on a question, they may opt to use the "Hint" option. The hint consists of a helpful written and/or pictorial clue that will provide insight into the question being asked without giving away the answer. When students answer a question incorrectly, they will be shown a detailed explanation page, from which they can learn where they went wrong as well as how to obtain the correct answer in the future. This way, students move through the lesson having learned from their mistakes.

This interactive third-grade math game comes equipped with several practical features that help students make the most of their math practice session. A progress-tracker in the upper-right corner of the practice screen shows students how many questions they have answered out of the total number of questions in the lesson. A score-tracker lets students know how many points they have earned so far in the lesson. Opposite, the speaker icon indicates the read-aloud feature; students can click the button to have the question read out loud to them in a clear voice. This is a great option for ESL/ELL students and children who excel at auditory learning. All lesson features are designed with students' success in mind!

3rd Grade Geometry Polygons Closed Shapes LessonThird Grade Geometry Identify Rectangles Triangles Quadrilaterals Lesson

Why Educators and Students Love I Know It

Elementary teachers and homeschool educators alike enjoy using the I Know It math practice program alongside their traditional math curriculum for additional math practice. Teachers appreciate the wide variety of engaging math activities we offer for kindergarten through fifth grade. Our math lessons span popular elementary math topics from place value to basic algebra. All math practice activities on I Know It are aligned to the Common Core standard and are organized on the website by grade level and topic. It's easy to find exactly what you're looking for right when you need it.

Students, too, love using the I Know It program to practice their math skills! Each math practice activity is presented as a fun, yet challenging, math game. Silly animated characters greet students in each math activity, ready to cheer them on each time they answer a question correctly. Plenty of positive feedback messages encourage kids to "Keep going!" even when they make mistakes. Plus, students can earn awards for their virtual "trophy case" for each new math skill they learn. Who knew math practice could be so fun?!

We hope you and your third-grade class will enjoy learning about polygons in this interactive math game! Be sure to check out the hundreds of other 3rd grade math lessons we have available on our website as well.

Test the Waters and Join Our Community!

Would you like to test the waters and try the I Know It math practice program with your students today? You can! Take advantage of our free sixty-day trial. With our free trial option, you and your class can explore all the interactive math activities on our website at no cost—no credit card required! We're confident you will love experiencing the difference interactive math practice can make, so when your free trial runs out, we hope you'll consider joining the I Know It community as a member of our site! This way, you and your students will continue to reap the benefits of interactive math practice for a full calendar year!

Your I Know It membership unlocks the website's handy administrative features, designed to make it easy for you to monitor your students' progress in their math practice. Our administrative tools allow you to create a class roster, assign unique usernames and passwords to your students, change basic lesson settings, give different lesson assignments to individual students, monitor students' progress with detailed, easy-to-read progress reports, and print, download, and email student progress reports.

When students log into I Know It using their unique username and password, they will be shown a kid-friendly version of the homepage. From here, they can access the lessons you have assigned to them for practice. If you choose to allow in your administrator settings, students can also explore other math practice activities at their grade level—and beyond—for extra review or an added challenge. Grade levels in the student mode of I Know It are labeled with letters instead of numbers, making it easier for you to assign math lessons based on a child's unique needs and skill level.

3rd Grade Geometry Polygons Closed Shapes ActivityThird Grade Geometry Identify Rectangles Triangles Quadrilaterals Activity


This online math lesson is classified as Level C. It may be ideal for a third-grade class.

Common Core Standard

3.G.A.1, MA.2.GR.1.1, MA.3.GR.1.1, 3.6A

Reason With Shapes And Their Attributes.
Understand that shapes in different categories (e.g., rhombuses, rectangles, and others) may share attributes (e.g., having four sides), and that the shared attributes can define a larger category (e.g., quadrilaterals). Recognize rhombuses, rectangles, and squares as examples of quadrilaterals, and draw examples of quadrilaterals that do not belong to any of these subcategories.

You might also be interested in...

Solid Shapes (Level C)
In this third grade-level math lesson, students will practice identifying solid shapes. Questions are presented in multiple-choice format and fill-in-the-blank format.

Classifying Angles (Level C)
In this math lesson geared toward third-grade, students will practice classifying angles. Questions are presented in multiple-choice format and fill-in-the-blank format.