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3rd Grade Two-Dimensional Shapes Educational Resources

For students who learn by doing, this exercise will make learning different shapes’ classifications much easier.


Classifying Shapes

Geometry in third grade introduces kids to the idea that shapes have different categories (rectangles, rhombuses, etc..) attributes (four-sided, etc...) and areas of different values. This lesson, designed by our curriculum experts, provides the guided instruction and practice that third graders need to conceptualize shapes in a deeper way. For more practice, download and print the third grade geometry worksheets recommended as part of this lesson.

Geometry 5

Craft a paper rocket in this hands-on activity inspired by the life of Mae Jemison!

Rocket Like Mae Jemison

Help your third-grader learn to recognize quadrilaterals with this geometry worksheet.

Naming Quadrilaterals

Use this worksheet as a formative assessment for your students as they study the characteristics of polygons.

Categorizing Shapes Check 

On this geometry worksheet, your third-grader will look at the different triangles and label them as equilateral, isosceles, or scalene

Identifying Triangles

This worksheet will introduce your child to the three types of triangles: the equilateral triangle, the isosceles triangle and the scalene triangle.

Three Types of Triangles 

Can you see the symmetry? Use this resource with your students to practice identifying shapes with symmetry. After your students identify the symmetrical shapes, they will draw a line of symmetry.

Shapes with Symmetry

Give your students a chance to sort polygons into categories that make sense to them.

Polygon Shape Sort

Geometry isn't so scary when it comes with colorful designs and easy-to-interpret illustrations! In order to take on algebra later on, your student will first need to conquer basic geometry.

Geometry Shape Up

In this geometry exercise, children calculate the perimeter of various trapezoids by adding up the lengths of their sides.

Trapezoid Perimeters

Reinforce your child&rsquo;s understanding of geometry and 2D shapes while learning about the artist Mary Blair and her amazing contributions to many loved movies, books, and characters throughout her career.

Make Art Like Mary Blair

Use this glossary with the EL Support Lesson: The Attributes of Polygons.

Glossary: The Attributes of Polygons

A key characteristic of trapezoids is that they have a set of parallel lines—lines that never intersect. Use this helpful geometry resource with your students to practice identifying parallel lines in trapezoids and comparing different 2-D shapes.

Trapezoids and Parallel Lines

4 lines make a quadrilateral! Help your child make various shapes with the dots in this worksheet.

Making Quadrilaterals

Help your third-grader learn to recognize the identifying features of a polygon on this geometry worksheet.

What is a Polygon?

Challenge your third grader to identify acute, right, and obtuse angles with this geometry worksheet.

What's Your Angle?

Help your child learn to recognize scalene triangles with this worksheet.

Scalene Triangles

Help your child practice identifying equilateral triangles on this geometry worksheet.

Equilateral Triangles

Symmetry is all around us, even in the letters we use in the English language! Use this fun geometry exercise with your students to give them practice identifying and drawing lines of symmetry.

Alphabet Symmetry

Use this resource to help your students develop their understanding of trapezoids and other two-dimensional shapes. Students will compare the attributes of trapezoids to those of other plane figures, such as triangles and ovals, in this geometry activity.

Geometry: Comparing Trapezoids & Other Shapes

Build reasoning and logic skills with a fun geometric shapes puzzle!

Color a Tangram Template

Children practice seeing fractions as parts of a whole in this foundational geometry worksheet.

Fraction Fundamentals: Part of a Whole

This little chick is so cute that your child will want to make a whole flock to call her own.

Little Chick

Use this geometry resource to give your students practice finding the perimeter of pentagons. Your pupils will be pentagon perimeter pros in no time!

Pentagon Perimeters

This math worksheet calls on students to examine the objects in their environment, measure them, and calculate the surface area in centimeters or inches.

Areas Around a Room

Use this fun math resource with your students to integrate geometry and fractions. Your students will use hexagons to enhance their understanding of fractions by creating their own visuals.

Hexagon Fractions

On this worksheet, your child will learn to name polygons and identify them in the world around him.

Drawing and Identifying Polygons

In this 3rd grade geometry worksheet, your child will complete each polygon using a ruler, then identify what type of polygon it is.

Polygons: Name that Shape

Use this glossary with the EL Support Lesson: Naming Shapes and their Attributes.

Glossary: Naming Shapes and their Attributes

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