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Technology 
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Arc  Math Open Reference

Arcs (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the concept of an arc. The applet shows a circle with part of it highlighted to
identify the arc. Each endpoint of the arc can be d...
More: lessons, discussions, ratings, reviews,...

Arc Length  Math Open Referen...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the concept of arc length.
The applet shows a circle with part of it's circumference highlighted and the central angle shown.
As...
More: lessons, discussions, ratings, reviews,...

Central Angle Theorem  Math O...

Arcs (Geometry)+ 
Java Applet 
Tool 

[1]

A web page and interactive applet illustrate the Central Angle Theorem (an arc subtends twice the angle at the center as at the circumference). By dragging the key points with the mouse, students ...
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Central Angle of a Circle  Ma...

Arcs (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the central angle of a circlethe angle subtended at the center by two points on the circle.
The applet presents a circ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 3, Pro...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with properties of arcs (segments) of a circle. The guide then examines the structure of the proposition. The To reset the applet, press "r" while your cursor is over the ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 3, Pro...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with properties of arcs (segments) of a circle. The guide then examines the structure of the proposition. The To reset the applet, press "r" while your cursor is over the ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 3, Pro...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with properties of arcs (segments) of a circle. The guide then examines the structure of the proposition. The To reset the applet, press "r" while your cursor is over the ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 3, Pro...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with angles formed with equal arc bases on equal circles. The guide then examines the structure of the proposition. The To reset the applet, press "r" while your cursor is ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 3, Pro...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition deals with angles formed with equal arc bases on equal circles. The guide then examines the structure of the proposition. The To reset the applet, press "r" while your cursor is ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 3, Pro...

Arcs (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows that in equal circles, two equal chords with cut the circles into corresponding equal sections. The guide then examines the structure of the proposition. The To reset the ...
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 3, Pro...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to bisect a given arc on a circle. The guide then examines the structure of the proposition. The To reset the applet, press "r" while your cursor is over the diagram.
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book 3, Pro...

Arcs (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows how to cut an arc equal to a given length and with a given angle (to a tangent of the circle). The guide then examines the structure of the proposition. The To reset the a...
More: lessons, discussions, ratings, reviews,...

Inscribed Angles

Arcs (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive Java illustration of the theorem of the angles inscribed into a circle. Inscribed angles subtended by the same asrc are equalas stated in Proposition III.21 of Euclid's Elements. The ...
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Intercepted arc  Math Open Re...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the concept of the intercepted arc 
"That part of a circle that lies between two lines that intersect it".
The applet shows a circl...
More: lessons, discussions, ratings, reviews,...

Major / Minor Arcs  Math Open...

Arcs (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate major and minor arcs. The applet shows a circle with two points
on it that can be dragged. The minor and major arcs they define are...
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Area Discussion

Area (Math 3)+ 
Java Applet 
Support Material 

[0]

A dialogue between a student and a mentor about finding areas of irregular shapes on a grid.
More: lessons, discussions, ratings, reviews,...

Grid Area of a Circle Estimati...

Area (Math 4)+ 
Java Applet 
Tool 

[1]

Given a grid, increase or decrease the number of squares on the grid or to approximate the grid area of a circle.
More: lessons, discussions, ratings, reviews,...

Area

Area (Math 6)+ 
Java Applet 
Lesson Plan 

[0]

Introduces the concept of area.
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Area Explorer

Area (Math 6)+ 
Java Applet 
Tool 

[1]

This activity allows users to test their skill at calculating the area of a random shape.
More: lessons, discussions, ratings, reviews,...

Area of a Parallelogram

Area (Math 7)+ 
Java Applet 
Tool 

[1]

Illustrates and defines the formula for the area of a parallelogram. From Illuminations' IGD: Interactive Geometry Dictionary.
More: lessons, discussions, ratings, reviews,...

Area of a Rectangle

Area (Math 7)+ 
Java Applet 
Tool 

[0]

Illustrates and defines the formula for the area of a rectangle. From Illuminations' IGD: Interactive Geometry Dictionary.
More: lessons, discussions, ratings, reviews,...

Area of a Rectangle  Math Ope...

Area (Math 7)+ 
Java Applet 
Tool 

[0]

A web page and interactive applet showing the ways to calculate the area of a rectangle. The user can drag the vertices of the rectangle and the other points change automatically to ensure it rem...
More: lessons, discussions, ratings, reviews,...

Area of a Triangle

Area (Math 7)+ 
Java Applet 
Tool 

[0]

Illustrates and defines the formula for the area of a triangle. From Illuminations' IGD: Interactive Geometry Dictionary.
More: lessons, discussions, ratings, reviews,...

Basic Areas  of a Rectangle a...

Area (Math 7)+ 
Java Applet 
Tool 

[1]

This applet has you manipulate a rectangle and triangle in order to discover the area formulas.
More: lessons, discussions, ratings, reviews,...

Area Between Curve and Axis

Area of a region (Calculus) 
Java Applet 
Tool 

[0]

See the area between a curve and the xaxis.
More: lessons, discussions, ratings, reviews,...

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