Handout
Quia

Ixl Learning: Area of Parallelograms

For Students 6th - 7th Standards
Brush up on your math skills relating to the area of parallelograms then try some practice problems to test your understanding.
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.
Activity
University of Cambridge

University of Cambridge: Nrich: Is a Square a Rectangle?

For Students 3rd - 4th Standards
This one page website offers a challenge working with rectangles that can lead to a discussion of their properties. Teacher notes offer direction and a solution is offered at this website.
Activity
University of Cambridge

University of Cambridge: Nrich: Making Squares

For Students 3rd - 4th
On this one page website sharpen your logic, spatial sense, and pattern recognition skills while working on this challenge. The solution is available to double check your solution.
Activity
University of Cambridge

University of Cambridge: Nrich: Three Squares

For Students 3rd - 4th
Students can sharpen their logic and spatial relationship skills while working on this challenge on this one page website. The solution is available to double check your solution.
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
Better Lesson

Better Lesson: Remarkable Rectangles

For Teachers K Standards
Rectangle is SO MUCH like triangle! Those darned angles--they'll get beginning learners! This is a fun way to practice rectangle!
Handout
The Math League

The Math League: Figures and Polygons

For Students 3rd - 8th Standards
This website has basic definitions for most polygons, regular and irregular.
Graphic
Curated OER

Educational Technology Clearinghouse: Clip Art Etc: Pyramids

For Students 9th - 10th
An illustration of two pyramids. A pyramid is a building where the upper surfaces are triangular and converge on one point. The base of pyramids are usually quadrilateral or trilateral (but generally may be of any polygon shape), meaning...
Activity
University of Cambridge

University of Cambridge: Nrich: Count the Trapeziums (Trapezoids)

For Students 3rd - 4th Standards
The challenge at this one page website, is to see how many trapezoids (British-trapeziums) you can find in the figure. When you have your results, you can easily check it right at the website.