Curated OER
"Polly"gon Pockets
Explore polygons with your elementary learners. Divide the class in 12 to configure the polygon puzzle before them. They list the attributes of each type of polygon they see, and if there's time, they jump on the interactive website...
Curated OER
The Greedy Triangle-Intro to Geometric Shapes
In this geometry lesson plan, learners read The Greedy Triangle and use geoboards to construct geometric shapes. They identify the number of sides and angles each shape has.
Improving Measurement and Geometry in Elementary Schools
Rep Tiles
In addition to the catchy title, this lesson plan provides upper graders an opportunity to more closely scrutinize the attributes of plane figures. In particular, they focus on the similarity of different shapes. Both whole-class and...
Alabama Learning Exchange
Creating a Reflection
Investigate geometric reflections in this geometry lesson. Create geometric reflections that show the reflection across the x and y axis of a coordinate graph. Learners watch a teacher demonstration before proceeding on their own. They...
![Inside Mathematics: Sorting Shapes [Pdf] Lesson Plan](https://d15y2dacu3jp90.cloudfront.net/images/attachment_defaults/resource/large/FPO-knovation.png "Inside Mathematics: Sorting Shapes [Pdf] Lesson Plan")
University of Texas
Inside Mathematics: Sorting Shapes [Pdf]
This task challenges a learners knowledge of 2-dimensional geometrical shapes to sort shapes and to design a shape that has a given set of attributes.
National Council of Teachers of Mathematics
Nctm: Illuminations: Cutting Corners
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.
AAA Math
Aaa Math: Geometry
A comprehensive tutorial from AAA Math that contains explanations, interactive practices and challenging games.
Math.com
Math.com: Quadrilaterals
The lesson investigates types of quadrilaterals. Definitions, examples, and a worksheet are available.
National Council of Teachers of Mathematics
The Math Forum: Defining Geometric Figures
This site provides an in-depth definition of a two-dimensional figure and a three-dimensional figure. Related terms include arcs, vertices, polygon, and many more.
Math Is Fun
Math Is Fun: Regular 2 D Shapes
This tutorial provides illustrations for regular 2-D shapes as well as a definition for polygons and for regular polygons.
Scholastic
Scholastic: Study Jams! Math: Geometry: Classify Quadrilaterals
After you explore the step by step lesson to classify quadrilaterals sing some karaoke and then test your knowledge.
Mangahigh
Mangahigh: Shape: Types of Triangle
Test your knowledge of triangles by identifying the different types.
Mangahigh
Mangahigh: Shape: The Angles Inside a Quadrilateral
Test your knowledge of the sum of angles inside a quadrilateral.
Mangahigh
Mangahigh: Shape: Recognize a Square and Rectangle
Test your knowledge of the similarities and differences between squares and rectangles.
Mangahigh
Mangahigh: Shape: Area of Quadrilaterals
Test your knowledge of the area of quadrilaterals.
CK-12 Foundation
Ck 12: Elem Math: Counting Vertices and Sides in Various Shapes
[Free Registration/Login may be required to access all resource tools.] Students practice counting sides and vertices in various two dimensional shapes.
CK-12 Foundation
Ck 12: Quadrilaterals That Are Parallelograms
[Free Registration/Login Required] Students will move the interactice quadrilateral to determine which quads are parallelograms. Click learn more to watch a video and click challenge me to answer a practice question.
CK-12 Foundation
Ck 12: Parallelogram Classification
[Free Registration/Login Required] Students will use the classify different shapes by changing the points on the given shape. Click learn more to watch a video and click challenge me to answer a practice question.
CK-12 Foundation
Ck 12: Parallelogram Classification
[Free Registration/Login Required] Students will use the interactive activity to complete the venn diagram. Click learn more to watch a video and click challenge me to answer a practice question.
CK-12 Foundation
Ck 12: Elem Math: Matching Equivalent 2 D Shapes
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to match a given shape with those that are equivalent or the same type. Includes video demonstrating a sample problem...
ClassFlow
Class Flow: Shapes Congruent
[Free Registration/Login Required] In this lesson students, will develop an understanding of geometric concepts and use them to identify, measure and compare a variety of two-dimensional and 3-dimensional shapes using models, pictures,...
Math Is Fun
Math Is Fun: Polygons
This is an excellent outline of the terms used to describe polygons as well as the definitions of the different types.
BBC
Bbc: Ks3 Bitesize: Properties of Quadrilaterals
The tutorial examines the different properties of quadrilaterals. The table consists of picture of the shape and a list of the shape's properties.
National Council of Teachers of Mathematics
The Math Forum: Building Shapes
Based on building a hexagon, this activity from the Math Forum collection focuses on using different combinations of pattern blocks to create a hexagon. An online activity, pencil and paper method, literature connections, and a...