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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

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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Shape Makers: Developing Geome...

Polygons (Geometry) 
Sketchpad 
Activity 
$ 
[0]

Author Michael Battista has built what he calls the Shape Makers computer microworld, a series of explorations in which students develop dynamic mental models for thinking about geometric shapes an...
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PolygonFlux

Regular polygons (Geometry) 
iPad 
Tool 
$ 
[0]

PolygonFlux lets you experience the flow of energy inside a polygon. In simplest terms, it traces the path of a point bouncing around inside a polygon of your choice, generating a pretty pattern.
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PolygonTrix

Regular polygons (Geometry) 
iPad 
Tool 
$ 
[0]

Every school child has played with a pool ball on a rectangular table or a carom puck on a square board. What would change if the table were a triangle or a pentagon? PolygonTrix is a game that s...
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Shapes  3D Geometry Learning

Polygons (Geometry) 
iPad 
Tool 
$ 
[0]

Learn, teach and explore different types of 3D solids and help students understand geometry
SHAPES features:

Area and perimeter of a rectan...

Rectangle (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page showing how to find the area and perimeter of a rectangle
from the coordinates of its vertices. The rectangle can be either parallel to the axes o...
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Area and perimeter of a square...

Square (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page showing how to find the area and perimeter of a square
from the coordinates of its vertices. The square can be either parallel to the axes or rota...
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Area and perimeter of a trapez...

Trapezoid (Geometry) 
Flash 
Activity 

[2]

An interactive applet and associated web page showing how to find the area and perimeter of a trapezoid
from the coordinates of its vertices. The trapezoid can be either parallel to the axes o...
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Definition and properties of a...

Square (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page that show the definition and properties of a square
when applied in coordinate geometry.
The applet has a square, and the user can drag any vertex ...
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Definition and properties of a...

Rectangle (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page that show the definition and properties of a rectangle in coordinate geometry.
The applet has a rectangle with draggable vertices. As the user res...
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Definition and properties of a...

Trapezoid (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page that show the definition and properties of a trapezoid in coordinate geometry.
The applet has a trapezoid with draggable vertices. As the user res...
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Diagonals of a rectangle Math...

Rectangle (Geometry) 
Flash 
Activity 

[0]

A web page and interactive applet show how to compute the length of the diagonals of a rectangle.
A rectangle is shown that can be resized by dragging its vertices. As you drag, the diagonals a...
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Diagonals of a square  Math O...

Square (Geometry) 
Flash 
Activity 

[0]

A web page and interactive applet show how to compute the length of the diagonals of a square.
A square is shown that can be resized by dragging its vertices. As you drag, the diagonals are con...
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The bounding box (Coordinate ...

Rectangle (Geometry) 
Flash 
Activity 

[0]

An interactive applet and associated web page that show the definition and properties of the bounding box of a polygon or set of points. Also known as the circumscribed rectangle.
The bounding b...
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Diagonals of a Rhombus

Rhombus (Geometry) 
Sketchpad 
Activity 

[0]

A guided exploration, using Geometer's Sketchpad, of the construction and diagonals of a rhombus.
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Examining Angles in Polygons

Polygons (Geometry) 
Sketchpad 
Activity 

[0]

Help students to discover or reinforce the angle formulas associated with polygons. Includes an activity in PDF format and a prepared sketch.
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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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Exterior Angles in a Polygon

Polygons (Geometry) 
Sketchpad 
Activity 

[0]

Students construct a pentagon with its exterior angles, measure the angles and find the sum. They then dilate the pentagon to look at the problem, and understand their result, in a new way. The lin...
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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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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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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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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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"Picking" Your Way through Are...

Polygons (Geometry) 
TINspire 
Activity 

[0]

In this activity, students will discover Pick’s Theorem by ﬁnding the relationship between area and the number of boundary points and interior points of a lattice polygon.
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Combinations

Polygons (Geometry) 
TINspire 
Activity 

[0]

This activity introduces students to combinations. They derive the formula for the number of combinations of n objects taken r at a time by starting with a list of permutations and eliminating those t...
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