Interactive
Government of Alberta

Learn Alberta: Math Interactives: Classifying Quadrilaterals

For Students 4th - 6th
This multimedia that includes a short video [1:19] and other interactive activities on Learn Alberta math resource looks at real-world examples of shape classification in the investigation and solving of crimes. The accompanying...
Activity
Texas Instruments

Texas Instruments: Properties of Quadrilaterals

For Teachers 9th - 10th Standards
This activity focuses on the properties of special quadrilaterals. [Requires Adobe Reader.]
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.
Handout
Khan Academy

Khan Academy: Quadrilaterals Review

For Students 4th
After reviewing the properties of different quadrilaterals, students answer questions about each type.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying Quadrilaterals by Description

For Students 4th - 5th
[Free Registration/Login may be required to access all resource tools.] For this learning module, students are asked to identify which type of quadrilateral matches the description given. Includes video demonstrating a sample problem...
Activity
Los Angeles County Office of Education

Los Angeles County Office of Education: Quadrilateral Quest

For Students 5th
Use your knowledge of properties of quadrilaterals to correctly match quadrilaterals.
Activity
Texas Instruments

Texas Instruments: Investigating Properties of the Diagonals of Quadrilaterals

For Teachers 9th - 10th
In this activity, students will explore the properties of the diagonals of various quadrilaterals. They will use a quadrilateral hierarchy chart to examine the relationship between the quadrilaterals.
Unknown Type
McGraw Hill

Glencoe: Self Check Quizzes 2 Quadrilaterals

For Students 6th - 8th
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of quadrilaterals. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the "Check...
Handout
Khan Academy

Khan Academy: Identifying Quadrilaterals

For Students 3rd Standards
Learn about the properties of rectangles, rhombuses, and squares, and practice identifying them. Includes hints for questions. CCSS.Math.Content.3.G.A.1 Understand that shapes in different categories
Handout
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Quadrilaterals

For Students 9th - 10th Standards
Find a quick, concise explanation of a quadrilateral. Examples are given and clearly explained.
Unit Plan
CK-12 Foundation

Ck 12: Geometry: Quadrilaterals That Are Parallelograms

For Students 9th - 10th Standards
[Free Registration/Login may be required to access all resource tools.] This concept teaches students how to prove that a quadrilateral is a parallelogram given the properties of parallelograms.
eBook
CK-12 Foundation

Ck 12: Interactive Geometry: 4.8 Applications of Quadrilateral Theorems

For Students 9th - 10th Standards
Explore quadrilateral properties and threorems.
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.
eBook
Math Planet

Math Planet: Geometry: Properties of Parallelograms

For Students 9th - 10th Standards
The properties of parallelograms are explained through examples and a video lesson. [0:53]
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying the Properties of Squares

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video overview and attempt practice problems on identifying the properties of squares.
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Identifying the Properties of Rectangles

For Students 3rd - 5th Standards
[Free Registration/Login may be required to access all resource tools.] Students watch a video tutorial and attempt practice problems on identifying the properties of rectangles.
Activity
Texas Instruments

Texas Instruments: Discovering the Quadrilateral Properties

For Teachers 9th - 10th Standards
This activity will use Cabri Jr. to allow students' the ability to discover all of the properties of each quadrilateral, rather than simply copying them out of a textbook.
Activity
Texas Instruments

Texas Instruments: Special Midpoint Quadrilaterals

For Teachers 9th - 10th Standards
Midpoint Quadrilaterals are quadrilaterals that are formed when consecutive midpoints of a quadrilateral are connected. This activity will use Cabri Jr. to investigate what properties an exterior quadrilateral has if its midpoint...
Activity
Texas Instruments

Texas Instruments: Cyclic Quadrilaterals

For Teachers 9th - 10th Standards
Students construct cyclic quadrilaterals and investigate their properties. They determine which quadrilaterals from the quadrilateral hierarchy are cyclic.
Lesson Plan
Shodor Education Foundation

Shodor Interactivate: Lesson: An Introduction to Quadrilaterals

For Teachers 9th - 10th Standards
Quadrilaterals-parallelograms, rectangles, and trapezoids-are thoroughly introduced in this lesson plan for upper elementary and middle school students. Lots of resources are linked to it to help support the teacher and students....
Activity
Texas Instruments

Texas Instruments: Investigating Properties of Kites

For Teachers 9th - 10th Standards
In this activity, students construct kites and investigate their properties. They also relate the properties to squares and rhombi.
Activity
Texas Instruments

Texas Instruments: Investigating Segments in a Quadrilateral

For Teachers 9th - 10th Standards
In this activity, students use the tools of Cabri Jr to test their knowledge of geometry. They investigate the properties of the shape formed by connecting the midpoints of adjacent sides of a quadrilateral.
Activity
Texas Instruments

Texas Instruments: Properties of Parallelograms

For Teachers 9th - 10th Standards
In this activity, students go through the process of proving a quadrilateral to be a parallelogram. They understand the various characteristics of a parallelogram.
Lesson Plan
OER Commons

Oer Commons: Exploring the Properties of a Triangle

For Teachers 6th - 8th Standards
For this lesson, middle schoolers explore properties of triangles. They fold paper to make a triangle and measure its angles. Students also draw triangles with given conditions. Included are examples, discussion questions, and closing...

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