Lesson Plan
Alabama Learning Exchange

Alex: Geometrica Fights Back!

For Teachers 9th - 10th Standards
This activity is designed to give students practice with the properties of special quadrilaterals (parallelograms, rectangles, rhombuses, squares, trapezoids, and kites). The students are provided with a "murder mystery" sheet with...
Lesson Plan
Better Lesson

Better Lesson: Area of Composite Shapes

For Teachers 6th Standards
Sixth graders take their knowledge about area of rectangles, squares and triangles and apply it to parallelograms, trapezoids, and composite shapes.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Quadrilateral Exercises

For Students 9th - 10th Standards
Twenty-four problems cover the topic of working with quadrilaterals in different settings. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View...
Unit Plan
E-learning for Kids

E Learning for Kids: Math: Russian Toy Store: 2 D Shapes

For Students 4th - 6th
Mattie and her four sisters are visiting a toy store. Can you help them find different shapes in the toy store?
Activity
National Council of Teachers of Mathematics

The Math Forum: Seventh Grade Math: Area and Perimeter

For Students 6th - 8th
Learn how to enlarge drawings, figure out how much tile to buy to cover a specific floor, and learn about area and perimeter. These and other lesson plans are provided, including a fun interdisciplinary plan featuring dragons.
Handout
Wolfram Research

Wolfram Math World: Squares

For Students 9th - 10th Standards
MathWorld provides multiple definitions and formulas for the mathematical term, square.
Handout
The Math League

The Math League: Figures and Polygons

For Students 9th - 10th Standards
This site provides definitions of different types of polygons and figures.
Lesson Plan
Beacon Learning Center

Beacon Learning Center: Quad Squad

For Teachers 2nd - 4th Standards
This interactive lesson investigates quadrilaterals and provides students with an opportunity to practice describing their attributes.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Angle Measures in Given Quadrilaterals

For Students 6th
[Free Registration/Login may be required to access all resource tools.] Find the degree measure of unknown angles in given quadrilaterals.
Study Guide
Oswego City School District

Regents Exam Prep Center: Area of Polygons and Circles

For Teachers 3rd - 6th Standards
How would you find the area of a polygon or circle? Explore this concept with engaging activities at this test prep site. Here you will find detailed problem solving strategies with accompanying visuals, a reference table with formulas,...
Study Guide
Oswego City School District

Regents Exam Prep Center: Study of Quadrilaterals

For Students 9th - 10th
An interesting technique is used for student viewers to learn about quadrilaterals. A viewer can meet the quadrilateral family by clicking on a link and characters will introduce themselves and tell you about their distinguishing...
Study Guide
Oswego City School District

Regents Exam Prep Center: Quadrilateral Family

For Students 9th - 10th
Regents Prep displays and explains the different types of quadrilaterals.
Activity
Illustrative Mathematics

Illustrative Mathematics: 4.g What Shape Am I?

For Teachers 3rd - 5th Standards
In this task, students ultimately use the definitions they are given for three types of quadrilaterals and what they know about parallel sides to identify that a square fits all the definitions and explain why. Aligns with 4.G.A.2.
Unit Plan
BBC

Bbc: Bitesize: Maths: 2 D Shapes

For Students 2nd - 8th Standards
Learn about the properties of 2-D shapes: circles, triangles, polygons, and quadrilaterals. Includes information, video, and examples about each, with games and quizzes for reinforcement.
Handout
CK-12 Foundation

Ck 12: Geometry: Triangles and Quadrilaterals Study Guide

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This study guide reviews the formulas for area and perimeter of triangles and different kinds of quadrilaterals.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 4.8 Applications of Quadrilateral Theorems

For Students 9th - 10th Standards
Explore quadrilateral properties and threorems.
Unknown Type
Math Slice

Math Slice: Area & Perimeter: Math Worksheets

For Students 3rd - 5th Standards
This tool allows you to create worksheets of word problems at varying levels of difficulty where students must calculate the area or perimeter of different polygon shapes. You can choose to set up the page using any of these polygon...
eBook
Mathigon

Mathigon: Geometry: Polygons and Polyhedra: Quadrilaterals

For Students 9th - 10th Standards
This lesson focuses on quadrilaterals which can fall into multiple categories based on the number of sides and the angles.
Graphic
History is Fun

Jan Brett: Geometric Shapes Flashcards Pdf

For Students Pre-K - 1st Standards
Print out these colorfully illustrated PDF file pages to practice learning your basic two dimensional geometric shapes. Fold them in half and one side shows the shape while the other side shows the shape with the correct name. Put them...
eBook
Other

Algebra Lab: Areas and Perimeters of Triangles and Special Quadrilaterals

For Students 6th - 7th Standards
Learn how to find the areas and perimeters of triangles and special quadrilaterals.
Website
Ducksters

Ducksters: Kids Math: Quadrilaterals

For Students 1st - 6th Standards
Explore four-sided polygons called quadrilaterals on this site.
Whiteboard
ClassFlow

Class Flow: Segments and Polygons

For Teachers 3rd - 5th Standards
[Free Registration/Login Required] This flipchart reviews segments, parallel and perpendicular lines and then introduces polygons including quadrilaterals. It has many real world examples of shapes and includes Activote assessment.
Whiteboard
ClassFlow

Class Flow: Two Dimensional Shapes Identify and Match

For Teachers Pre-K - 1st Standards
[Free Registration/Login Required] This flipchart helps students to analyze and compare various two-dimensional shapes according to the vertices, sides and parallel lines. It features "containers" created in Version 3 (can be used with...
Activity
Rice University

Rice University: Cynthia Lanius: Hidden Polygon Activity

For Students 4th - 7th Standards
On this site students are instructed to locate different types of polygons on triangle grid paper. This page can be printed so that students can actually draw them. It also gives a definitions link for each polygon.