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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

Constructing an Isosceles Tria...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep animated instructions on how to
contruct an isosceles triangle with given sides
using only a compass and straightedge.
More: lessons, discussions, ratings, reviews,...

Constructing the Perpendicular...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

Students can learn how to construct the perpendicular bisector of a line segment. The applet asks students a few exploration questions to think about and try to discover through further experimentati...
More: lessons, discussions, ratings, reviews,...

Constructing the circumcenter ...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep animated instructions on how to
construct the circumcenter of a triangle.
The animation can be run either co...
More: lessons, discussions, ratings, reviews,...

Constructing the incenter of a...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep animated instructions on how to
construct the incenter of a triangle.
The animation can be run either contin...
More: lessons, discussions, ratings, reviews,...

Constructing the orthocenter o...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to construct the orthocenter of a triangle
using only a compass and straightedge.
The method used invo...
More: lessons, discussions, ratings, reviews,...

Constructinga 60° angle with c...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that show how to construct a 60° angle with a compass and straightedge.
The animation can be singlestepped or run as a continuous movie.
<...
More: lessons, discussions, ratings, reviews,...

Copying a Line Segment Using C...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to copy
a line segment
using only a compass and straightedge.
The animation can be run ...
More: lessons, discussions, ratings, reviews,...

Copying a Triangle with Compas...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to copy a given triangle
using only a compass and straightedge.
The animation can be run ei...
More: lessons, discussions, ratings, reviews,...

Copying an Angle Using Compass...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to copy an angle
using only a compass and straightedge.
The animation can be run either c...
More: lessons, discussions, ratings, reviews,...

Desargues Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Desargues Theorem which can be stated, "If the lines joining corresponding vertices of two triangles are concurrent, then the intersections of corresponding si...
More: lessons, discussions, ratings, reviews,...

Dividing a Line Segment Using ...

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep instructions on how to
divide a line segment into any number of equal parts,
using only a compass and straightedge. The ...
More: lessons, discussions, ratings, reviews,...

Find the center of a circle. M...

Straightedge and compass (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,...

Finding the Center of a Circle...

Straightedge and compass (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,...

Funhouse Mirrors

Straightedge and compass (Geometry) 
Sketchpad 
Tool 

[0]

A Geometer's Sketchpad tool for constructing distorted images that can be viewed undistorted with a cylindrical mirror. The file contains tabbed pages with several images, a grid for students to draw...
More: lessons, discussions, ratings, reviews,...

GeoCon

Straightedge and compass (Geometry) 
iPhone 
Tool 
$ 
[1]

GeoCon is designed to be used by students, teachers and math enthusiasts studying plane geometry. With GeoCon various constructions can be created with the touch of a finger. Resolve construction task...
More: lessons, discussions, ratings, reviews,...

GeoCon HD

Straightedge and compass (Geometry) 
iPad 
Tool 
$ 
[1]

GeoCon HD is designed to be used by students, teachers and math enthusiasts studying plane geometry. With GeoCon HD various constructions can be created with the touch of a finger. Resolve constructio...
More: lessons, discussions, ratings, reviews,...

Geometria

Straightedge and compass (Geometry) 
Computer 
Tool 

[0]

Geometria is free (GPL) crossplatform software based on a tworole (teacher, student) model. The teacher creates a problem, provides it with an answer and saves the problem in a file. The student ope...
More: lessons, discussions, ratings, reviews,...

La Hire's Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate La Hire's Theorem which can be stated, "If P lies on the polar of Q, then Q lies on the polar of P."
More: lessons, discussions, ratings, reviews,...

Pappus's Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Pappus's Theorem which can be stated, "If alternate vertices of a hexagon are collinear, then the intersections of opposite sides are collinear."
More: lessons, discussions, ratings, reviews,...

Pascal's Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Pascal's Theorem which can be stated, "If the vertices of a hexagon lie on a conic, then the intersections of opposite sides are collinear."
More: lessons, discussions, ratings, reviews,...

The 3 Tangents Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate The 3 Tangents Theorem which can be stated, "If the triangle ABC touches the conic at P, Q, and R as shown, then AP, BQ, and CR are concurrent."
More: lessons, discussions, ratings, reviews,...

The 3 Tangents and 3 Chords Th...

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate The 3 Tangents and 3 Chords Theorem which can be stated, "Triangle ABC is inscribed in a conic. If the tangent at A meets the chord BC at P, the tangent at B m...
More: lessons, discussions, ratings, reviews,...

The Converse of Pascal's Theor...

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate The Converse of Pascal's Theorem which can be stated, "If the points A, B, C, D, E, F are such that the intersections of AC and BD, of AE and DF, and of BE and...
More: lessons, discussions, ratings, reviews,...

The Focusdirectrix Definition

Straightedge and compass (Geometry) 
Java Applet 
Tool 

[0]

The CabriJava applet shows a conic with focus F, directrix L passing through a point P. The choice of P determines the eccentricity  as the ratio PQ/PF. You can move F and P to see what shapes ar...
More: lessons, discussions, ratings, reviews,...

Loan Calculator

Student loans (Financial Education) 
Java Applet 
Tool 

[0]

Explore how to pay off a loan, and how interest affects payment. You can control the the frequency of the payments and the period (number of years) of payments or the amount of each payment.
More: lessons, discussions, ratings, reviews,...

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