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Khan Academy

Khan Academy: Area & Perimeter on the Coordinate Plane

For Students 9th - 10th Standards
Find the area or perimeter of shapes like triangles, rectangles, parallelograms, and hexagons on the coordinate plane.
Unit Plan
Math Is Fun

Math Is Fun: Interactive Quadrilaterals

For Students 3rd - 8th Standards
Resize and rotate different types of quadrilaterals--square, rectangle, rhombus, trapezoid, and kite--while learning the definitions of these different shapes and labeling the angles and diagonals. CCSS.Math.Content.3.G.A.1 Understand...
Activity
Texas Instruments

Texas Instruments: Area Formulas App

For Teachers 6th - 8th
Students review the definition and area formula for the rectangle, square, parallelogram, triangle, trapezoid, and circle.
Activity
Texas Instruments

Texas Instruments: Getting Started With Area Formulas App

For Teachers 9th - 10th Standards
Calculate the Area of a Trapezoid This Concept Handheld Software Application reviews the definition and area formula for the rectangle, square, parallelogram, triangle, trapezoid, and circle.
Unit Plan
Khan Academy

Khan Academy: Quadrilateral Types

For Students 3rd - 5th Standards
Identify quadrilaterals based on pictures or attributes. Quadrilaterals included are parallelograms, rhombuses, rectangles, and squares. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Website
PBS

Pbs Learning Media: Skateboarding

For Students 3rd - 8th
In this video segment from Cyberchase, Bianca injures her ankle while skateboarding and is confined to her bed. She has trouble reaching a few objects from her bed until her friend gives her a device made up of collapsible...
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 4.7 Theorems About Quadrilaterals

For Students 9th - 10th Standards
Use quadrilateral properties that are unique to parallelograms to prove that the given shape is a parallelogram.
Graphic
Curated OER

Ic Teachers: Shapes Quadrilaterals

For Students 3rd - 8th
Are you looking for a very basic website that will explain the basic properties of a quadrilateral? Use this site to learn about the properties of a square, rhombus, rectangle, parallelogram, trapezoid, and kite. There are also some...
Graphic
Curated OER

Ic Teachers: Shapes Quadrilaterals

For Students 3rd - 8th
Are you looking for a very basic website that will explain the basic properties of a quadrilateral? Use this site to learn about the properties of a square, rhombus, rectangle, parallelogram, trapezoid, and kite. There are also some...
Lesson Plan
Alabama Learning Exchange

Alex: Characteristics of Quadrilaterals

For Teachers 9th - 10th Standards
Students will begin unit on quadrilaterals with basic overview of characteristics of parallelograms, rectangles, squares, rhombi, and isosceles and non-isosceles trapezoids. After the word wall is made, the teacher can use interactive...
Activity
BBC

Bbc: Area in General

For Students 4th - 7th Standards
You can pick up some valuable pointers on how to find the area of a triangle, rectangle, and other quadrilaterals. When you finish working your way through the pages you can take an on-line "Test Bite," and check your understanding.
Activity
National Council of Teachers of Mathematics

The Math Forum: Find the Area of the Shape!

For Students 3rd - 8th Standards
Try to figure out the area of this challenging shape. In order to view the images, you will need to use JavaSketchpad.
Interactive
National Council of Teachers of Mathematics

Nctm: Illuminations: Shape Cutter

For Students Pre-K - 1st Standards
This computer tool allows students to compose and decompose shapes by making cuts and rearranging the pieces. The tool has an exploration section for learning exercises.
Handout
Quia

Ixl Learning: Types of Quadrilaterals

For Students 3rd - 5th Standards
Brush up on your math skills relating to the types of quadrilaterals then try some practice problems to test your understanding.
Whiteboard
ClassFlow

Class Flow: Area

For Teachers 9th - 10th Standards
[Free Registration/Login Required] This creative and engaging flipchart explains the area of all kinds of shapes, to include squares, parallelograms, rectangles, triangle, and trapezoids.
Unit Plan
Varsity Tutors

Varsity Tutors: Hotmath: Review: Area

For Students 9th - 10th Standards
Find a quick, concise explanation of area and the formulas for different shapes. An example is given to help you understand how find the area of a shape. The area formulas are listed for different types of shapes.
Lesson Plan
Google

Google for Education: Area of a Circle

For Teachers 9th - 10th
Students learn to derive the formula for the area of a circle. They learn to relate a circle to a parallelogram and rectangle while learning the concept of infinity as they imagine slicing an circle into infinitesimally small slices.
Unit Plan
Texas Education Agency

Texas Gateway: Determining Area of Composite Figures

For Students 7th - 8th
Given composite figures (combinations of rectangles, squares, parallelograms, trapezoids, triangles, semicircles, and quarter circles), students will be able to determine expressions for the area as well as calculate the area of the figure.
Graphic
Curated OER

Ic Teachers: Shapes Quadrilaterals

For Students 3rd - 8th
Are you looking for a very basic website that will explain the basic properties of a quadrilateral? Use this site to learn about the properties of a square, rhombus, rectangle, parallelogram, trapezoid, and kite. There are also some...
Graphic
Curated OER

Ic Teachers: Shapes Quadrilaterals

For Students 3rd - 8th
Are you looking for a very basic website that will explain the basic properties of a quadrilateral? Use this site to learn about the properties of a square, rhombus, rectangle, parallelogram, trapezoid, and kite. There are also some...
Graphic
Curated OER

Ic Teachers: Shapes Quadrilaterals

For Students 3rd - 8th
Are you looking for a very basic website that will explain the basic properties of a quadrilateral? Use this site to learn about the properties of a square, rhombus, rectangle, parallelogram, trapezoid, and kite. There are also some...
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That Quiz

That Quiz: Practice Test: Shapes

For Students 3rd - 8th Standards
This resource provides a practice geometry quiz for students to use.
Lesson Plan
National Council of Teachers of Mathematics

The Math Forum: Geoboard Activities

For Teachers 9th - 10th Standards
Math Forum provides a set of links to sites that are related to geoboard activities. There are several great links to lessons using geoboards. The links provide insight into how to use them, including how to perform various measurements...
Unit Plan
Cuemath

Cuemath: Quadrilaterals

For Students 5th - 8th
Explore the world of quadrilaterals and their properties. Find answers to questions like what are quadrilaterals, how they are formed, easy ways to identify them, and commonly seen quadrilaterals around us.