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Topic (Course) 
Technology 
Type 
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Rating 

Thales Theorem  Math Open Ref...

Circles (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet illustrating Thales' Theorem
(the diameter of a circle always subtends a right angle to any point on the circumference).
The applet shows a circle wher...
More: lessons, discussions, ratings, reviews,...

Finding the Center of a Circle...

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to find the center of a circle
using only a compass and straightedge.
The method used involves constru...
More: lessons, discussions, ratings, reviews,...

Sector of a circle  Math Open...

Circles (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate a sector  a pie shaped part of a circle.
The applet shows a sector against the background of the circle of which it is part.
The ...
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Area of a Circle  Math Open R...

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the area of a circle.
A circle is shown with a point on the circumference that can be dragged to resize the circle.
As the circle i...
More: lessons, discussions, ratings, reviews,...

Area of a Segment of a Circle ...

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the area of a segment of a circle  a part of a circle cut off by a chord.
The applet shows a circle and a segment of that circle, ...
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Concentric Circles  Math Open...

Circles (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the concept of concentricity.
The applet shows two resizeable concentric circles and the common center point. As they are dragged to ...
More: lessons, discussions, ratings, reviews,...

Find the center of a circle. M...

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to find the center of a circle
using any rightangled object, such as a piece of paper.
The method use...
More: lessons, discussions, ratings, reviews,...

Draw ellipse with pins and str...

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to draw an ellipse
using two pins and some string. Not strictly a Euclidean construction, but instruct...
More: lessons, discussions, ratings, reviews,...

Circle definition  Math Open ...

Circles (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page defining a circle.
The applet shows a circle where the user can drag the center and a point on the circle. The radius line supports the definition
...
More: lessons, discussions, ratings, reviews,...

Inscribed Angle of a Circle  ...

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

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

Math Images Tool: Hypotrochoid

Circles (Geometry)+ 
Java Applet 
Tool 

[0]

There are three subgroups within the Hypotrochoid family. The point P can be in three different general locations in relation to the rolling circle: inside, outside, or on the edge. The user of this a...
More: lessons, discussions, ratings, reviews,...

The Radian

Circumference (Geometry) 
Computer 
Support Material 

[0]

Provides an illustration and description of radians and how they relate to a circle.
More: lessons, discussions, ratings, reviews,...

Perimeter and Circumference (G...

Circumference (Geometry)+ 
Flash 
Support Material 

[0]

This minilesson explains how to find the pperimeter and circumference of geometric shapes.
More: lessons, discussions, ratings, reviews,...

Circumference of a Circle (Geo...

Circumference (Geometry) 
Flash 
Support Material 

[0]

This minilesson defines and explains the basics of a circle: radius, diameter, circumference and their relationship. It will also guide you through determining the circumference of a circle given a r...
More: lessons, discussions, ratings, reviews,...

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

Circumference (Geometry)+ 
Java Applet 
Tool 

[0]

Euclid's proposition shows that when two equal circles are cut into two corresponding equal sections, then the chords cutting the circles' circumferences are equal. The guide then examines the struct...
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Circumference of a Circle

Circumference (Geometry) 
Flash 
Tool 

[0]

Flashbased introduction to finding the circumference of a circle, given the radius. College Cram charges access fees by the month or by the semester for most resources. To get a preview of their ...
More: lessons, discussions, ratings, reviews,...

Circumference of a circle  Ma...

Circumference (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the circumference of a circle.
The applet shows a circle with a radius line.
The radius endpoints are draggable and the circle i...
More: lessons, discussions, ratings, reviews,...

Journal: Describe the Shape

Classify geometric objects (Kindergarten)+ 
Java Applet 
Story 

[0]

Varnelle describes how the children responded as she worked with them on the "Describe the Shape" activity.
More: lessons, discussions, ratings, reviews,...

Polygons

Classify geometric objects (Math 3)+ 
Java Applet 
Lesson Plan 

[0]

This lesson has online resources that teach basic concepts about polygons.
More: lessons, discussions, ratings, reviews,...

Venn Diagram Lesson

Classify geometric objects (Math 3)+ 
Calculator 
Lesson Plan 

[0]

Students learn how to classify items and numbers on Venn Diagrams using computer applets.
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Exploring Properties of Rectan...

Classify geometric objects (Math 3)+ 
Java Applet 
Tool 

[0]

Students manipulate a rectangle and a parallelogram in this applet to explore their respective properties. The surrounding page gives teachers some ideas of reflection questions to ask their students,...
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Types of Triangles

Classify geometric objects (Math 3)+ 
Sketchpad 
Tool 

[0]

This Sketchpad sketch accompanies the tPoW, Types of Triangles. Students are able to drag and manipulate four triangles and by noticing what happens they classify the triangles as either scalene, isos...
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Polygon Sort

Classify geometric objects (Math 3)+ 
Flash 
Tool 

[0]

Sort these polygons using a Carroll diagram. Watch them bounce back if you put them in the wrong location.
More: lessons, discussions, ratings, reviews,...

Tipos de Triángulos

Classify geometric objects (Math 3)+ 
Sketchpad 
Technology PoW 

[0]

Los estudiantes utilizan un dibujo de GSP o una página interactiva de la red para arrastrar y manipular cuatro triángulos: uno isósceles, uno agudo, uno equiángulo, y otro recto.
versión ...
More: lessons, discussions, ratings, reviews,...

Rectangles Dialogue

Classify geometric objects (Math 4)+ 
Java Applet 
Support Material 

[0]

Introduces students to rectangles and squares and defines the characteristics necessary to determine each shape.
More: lessons, discussions, ratings, reviews,...

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