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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

Simple Constructions

Construction and loci (Geometry) 
Cabri Jr. 
Activity 

[1]

In this activity students use the Cabri Jr. application to perform simple constructions.
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Basic Constructions (Getting S...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the concepts and procedures for basic constructions.
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Constructing Parallel and Perp...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to construct parallel and perpendicular lines, using earlier lessons about the basics of compass and straightedge construction.
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Midpoint of a Line Segment (Ge...

Construction and loci (Geometry) 
Flash 
Support Material 

[0]

This lesson explains how to construct the midpoint of a line segment and inscribe a circle in a given triangle.
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Geometria

Construction and loci (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...
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4 Standard Types of Loci

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

This allows students to explore 4 loci problems with a JavaSketchpad sketch: from 1 fixed point, from 1 fixed line, from 2 fixed points, and from 2 fixed lines. The students can manipulate the drawin...
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Constructing the Perpendicular...

Construction and loci (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...
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Draw ellipse with pins and str...

Construction and loci (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...
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Equidistant points  Math Open...

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that have the definition and meaning of "equidistant" as applied to points.
The applet shows to points and another that is equidistant from them no m...
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Other Types of Loci

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

This JavaSketchpad sketch allows students to explore 3 loci problems:

Perpendicular Bisector of a Se...

Construction and loci (Geometry) 
Java Applet 
Tool 

[1]

Use this applet to find out how to construct the perpendicular bisector of a line segment. From Illuminations' IGD: Interactive Geometry Dictionary.
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The concept of locus  Math Op...

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

A web page and interactive applet that illustrate the concept of locus.
The applet shows a model of the plane populated with "all" the possible points on the plane. Choosing to highlight...
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Turtle Geometry

Construction and loci (Geometry) 
Java Applet 
Tool 

[1]

Move and turn a turtle.
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Using a protractor. Math Open ...

Construction and loci (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that provide stepbystep animated instructions on how to
use a protractor to draw an angle.
The animation can be run either continuousl...
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GeoCon HD

Construction and loci (Geometry) 
iPad 
Tool 
$ 
[0]

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...
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GeoCon

Construction and loci (Geometry) 
iPhone 
Tool 
$ 
[0]

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...
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Origami Construction

Paper folding (Geometry) 
JavaScript 
Tool 

[1]

Follow these stepbystep instructions to construct a mathematically correct regular pentagon by folding a sheet of paper.
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Printable compass / straighted...

Straightedge and compass (Geometry) 
Flash 
Activity 

[2]

A web page that contains a list of 35 printable worksheets for compass and straightedge constructions.
Each printable sheet has 2 or 3 problems and links back to the pages interactively explaining th...
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Construct a 90 deg angle with ...

Straightedge and compass (Geometry) 
Java Applet 
Activity 

[0]

An interactive applet and associated web page that show how to construct a 90° right angle with a compass and straightedge.
The animation can be singlestepped or run as a continuous movie.
<...
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Constructions of Equilateral a...

Straightedge and compass (Geometry) 
Sketchpad 
Activity 

[0]

Students will discuss the difference between drawing and constructing a triangle using The Geometer’s Sketchpad. They will further develop constructions for both isosceles and equilateral triangles. ...
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Paper Cup Mathematics

Straightedge and compass (Geometry) 
Sketchpad 
Lesson Plan 

[0]

Imagine a discarded paper cup rolling on its side of a flat surface. What geometric shape does the path of the cup form?
Students investigate this question and begin the activity by experimenting wit...
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Brianchon's First Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Brianchon's First Theorem which can be stated, "If AB, CD, and EF are concurrent at X, and BC, DE, and FA are concurrent at Y, then AD, BE, and CF are concurre...
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Brianchon's Theorem

Straightedge and compass (Geometry) 
Cabri 
Tool 

[0]

A Cabri *.fig file written to illustrate Brianchon's Theorem which can be stated, "If each side of a hexagon touches a conic, then its diagonals are concurrent."
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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...
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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."
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