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Technology 
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Identify These Quadrilaterals

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[2]

This applet asks you to determine the types of quadrilaterals illustrated.
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Midpoint Quadrilaterals

Quadrilaterals (Geometry) 
Sketchpad 
Activity 

[0]

Students construct the midpoints of the sides of a quadrilateral, connect them to form the midpoint quadrilateral, and then discover interesting properties of the midpoint quadrilateral. The link t...
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Geometry Activities for Middle...

Quadrilaterals (Geometry) 
Sketchpad 
Activity 
$ 
[0]

These activities provide students with the opportunity to explore geometric concepts such as symmetry, transformations, and even fractal geometry in a way no other teaching tool can. The dynamic ca...
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Exploring Quadrilaterals

Quadrilaterals (Geometry) 
Sketchpad 
Activity 

[0]

Students explore various types of quadrilaterals, investigating their properties and figuring out how the various shapes relate to each other. The link to the activity itself is to a zip file that ...
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Quadrilateral Exploration: Sha...

Quadrilaterals (Geometry) 
Sketchpad 
Activity 

[0]

Students first use the seven "Quadrilateral Makers" (square maker, rhombus maker, rectangle maker, parallelogram maker, kite maker, trapezoid maker, and quadrilateral maker) to make a design of their ...
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Proof as Discovery: Kite Midpo...

Quadrilaterals (Geometry) 
Sketchpad 
Activity 

[0]

Students investigate and prove a property of kites, and use the proof to make a discovery about other quadrilaterals. The link to the activity itself is to a zip file that contains both the activi...
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Quadrilaterals

Quadrilaterals (Geometry) 
Sketchpad 
Activity 

[0]

Investigate the parallelogram, rectangle, square, rhombus, and isosceles trapezoid. Includes an activity in PDF format and a prepared sketch.
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Two Minimum Length Problems an...

Quadrilaterals (Geometry) 
Sketchpad 
Activity 

[0]

A guided exploration of minimum distances from vertices of a triangle or quadrilateral to a point within the figure, using Geometer's Sketchpad.
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Relationships Between Area and...

Quadrilaterals (Geometry) 
Excel 
Lesson Plan 

[0]

In this activity, students explore the relationships between area and perimeter by fixing one value and maximizing the other. Students will explore the relationship between perimeter and area of recta...
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An Introduction to Quadrilater...

Quadrilaterals (Geometry) 
Java Applet 
Lesson Plan 

[0]

An introduction to quadrilaterals.
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Math Forum Teacher Packet: TI ...

Quadrilaterals (Geometry) 
TINspire 
Lesson Plan 

[0]

This packet contains a copy of the original problem used to create the activity, rationale and explanation behind the “I Notice, I Wonder” focal activity, and some thoughts on why this activity works ...
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Quadrilaterals (Getting Starte...

Quadrilaterals (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the basics of quadrilaterals.
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Properties of Quadrilaterals (...

Quadrilaterals (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the properties of different types of quadrilaterals.
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Quadrilaterals (Amsco Integrat...

Quadrilaterals (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains quadrilaterals and types of quadrilaterals such as trapezoid, parallelogram, rectangle, rhombus, square, etc.
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Parallelograms Dialogue

Quadrilaterals (Geometry) 
Java Applet 
Support Material 

[0]

Introduces students to parallelograms and rombuses and defines the characteristics necessary to determine each shape.
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Quadrilaterals Dialogue

Quadrilaterals (Geometry) 
Java Applet 
Support Material 

[0]

Introduces students to quadrilaterals and defines the characteristics of the polygon.
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Quadrilaterals in Quadrilatera...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Java Sketchpad applet that illustrates the remarkable fact that the midpoints of any quadrilateral form a parallelogram.
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Two Squares

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Find out what quadrilateral is formed at the midpoints of the segments connecting these two squares.
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Congruent Transformation

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet follows descriptions on how to transform any quadrilateral into a parallelogram, rectangle, or triangle based on transformations of the pieces of the quadrilateral.
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Two Tapes

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Figure out what quadrilateral is created by these two pieces of overlapping tape using the provided applet.
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Problem about a Quadrilateral

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet illustrates what types of inscribed quadrilaterals are created by connecting the midpoints of a quadrilateral.
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What Is A Quadrilateral?

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet illustrates what a quadrilateral is.
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What Is A Trapezium?

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

This applet illustrates what a trapezium is.
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Euclid's Elements, Book 3, Pro...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows that opposite angles of a quadrilateral within a circle sum to the measure of two right angles. The guide then examines the structure of the proposition. The To reset the ...
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Euclid's Elements, Book 3, Pro...

Quadrilaterals (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with proving equality among quadrilaterals constructed by intersecting lines within a circle. The guide then examines the structure of the proposition. The To reset the ap...
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