Lesson Plan
University of Texas

Inside Mathematics: Which Shape [Pdf]

For Teachers 2nd - 4th Standards
This task challenges a student to use knowledge of geometrical attributes to identify and describe shapes.
Handout
Math Is Fun

Math Is Fun: Regular 2 D Shapes

For Students 3rd - 8th Standards
This tutorial provides illustrations for regular 2-D shapes as well as a definition for polygons and for regular polygons.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Counting Different 2 D Shapes Within Simple Composite Figures

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine what shapes are used to create a given composite shape. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Count the Number of Different 2 D Shapes in a Composite Figure

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video defines a composite figure and describes how to determine how many triangles are within the given composite shape. The video is followed by practice problems.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Matching Equivalent 2 D Shapes

For Students 2nd - 4th
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine which shapes are similar by looking at the attributes of the given shapes. The video is followed by a series of practice...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Counting Different 2 D Shapes Within Complex Composite Figures

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video describes how to determine how many triangles are needed to create the complex composite shape.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Classifying Real Life Objects as Basic 2 D Shapes

For Students 1st - 2nd Standards
[Free Registration/Login may be required to access all resource tools.] The video describes how to classify a real-world object as a circle, triangle, square or rectangle. The video is followed by additional practice problems.
Activity
National Council of Teachers of Mathematics

Nctm: Illuminations: Cutting Corners

For Students 9th - 10th Standards
Students will use their knowledge of plane figure attributes to create and view shapes by cutting and rotating shapes to stimulate discussions on names and attributes of various shapes they do not regularly encounter.
Activity
Scholastic

Scholastic: Max's Math Adventures: Max's Fantastical Zoo

For Teachers 3rd - 5th
Use this rhyming description of Max's Fantastical Zoo to make some amazing animals from geometric shapes. There is a teacher's guide for easy lesson planning.
Activity
NumberNut

Number Nut: Shapes, Symbols, and Colors: 2 D Shapes

For Students K - 1st Standards
Did you know that two-dimensional shapes are also called polygons? This lesson describes the various 2-D shapes and includes two interactive games to reinforce skills.
Interactive
Other

Kinderweb: Educational Children's Games

For Students Pre-K - 1st Standards
Use this site to practice identifying shapes, colors, and animals with these interactive games.
Activity
NumberNut

Number Nut: Shapes, Symbols and Colors: Two Dimensional Shapes

For Students 3rd - 5th Standards
Describes, with illustrations, the basic two-dimensional shapes students will encounter in elementary Math.
Lesson Plan
PBS

Pbs Mathline Lesson: Geometry, It's a Perfect Fit [Pdf]

For Teachers 3rd - 5th Standards
This two-part geometry lesson plan has students identify, describe, and classify two-dimensional shapes. Students engage in hands-on activities including identifying shapes in the classroom, creating patterns with shapes, identifying...
Website
University of Regina (Canada)

University of Regina: Math Central: Lesson: Mr. Z's 5 Minute Game of Geometric Pandemonium

For Teachers 3rd - 5th Standards
Students make a series of geometric drawings of points, obtuse angles, rays, polygons, and the like. Each child is given one but not allowed to show anyone else. The drawing is then taped to the back of the child in front of them. The...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: G Gmd, G Mg Tennis Balls in a Can

For Teachers 9th - 10th Standards
In this task, students investigate the volume of tennis balls and their cylindrical container, the empty space around the balls, different ways of slicing them, and what their visualizations will look like. Aligns with G-GMD.B.4 and...