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Topic (Course) 
Technology 
Type 
$? 
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Right Triangle Geometry

Right Triangles (Geometry) 
Java Applet 
Activity 

[2]

This eModule presents realworld problems that motivate students to work with right triangle geometry. Interactive worksheets and diagrams with feedback help students learn to solve for unknown angles...
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VisualTrig: Triangle or Rectan...

Pythagorean theorem (Geometry)+ 
JavaScript 
Tool 

[2]

Online Desktop and PocketPC visual trigonometric calculators.
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Pythagorean Theorem

Pythagorean theorem (Geometry) 
Java Applet 
Support Material 

[1]

Read explanations of fortythree proofs of the Pythagorean theorem. Some of the proofs have additional pages with applets to explore.
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Pythagorean Theorem

Pythagorean theorem (Geometry) 
Java Applet 
Tool 

[3]

This virtual manipulative allows you to walk through a visual proof of the Pythagorean theorem. Before beginning the proof, recall that the pythagorean theorem is: c^2 = a^2 + b^2
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Learn Trig...The Easy Way

Right Triangles (Geometry)+ 
Java Applet 
Tool 

[3]

Introduction
You know how to find the length of the third side of a right triangle when the lengths of the two other sides were given, but how does a person determine the length of a side if t...
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Pythagorean Theorem

Pythagorean theorem (Geometry) 
Flash 
Tool 

[1]

Discover how the Pythagorean formula describes the relationships between the lengths of the legs and hypotenuse of a right triangle. Teachers and students can use this audionarrated lesson, interact...
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Pythagoras' Theorem

Pythagorean theorem (Geometry) 
Flash 
Tool 

[1]

Test yourself on the Pythagorean Theorem and its applications in these ten questions.
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Pythagoras graphical proof  M...

Pythagorean theorem (Geometry) 
Java Applet 
Tool 

[1]

An interactive applet and associated web page that demonstrates a graphical proof of Pythagoras' Theorem.
The applet shows a right triangle that is replicated and then moved around to demonstra...
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Pythagorean Theorem Lab

Pythagorean theorem (Geometry) 
Computer 
Activity 

[1]

Students do a "web excursion" exploring various proofs and the history of the Pythagorean Theorem.
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Pythagorean Explorer

Pythagorean theorem (Geometry) 
Java Applet 
Tool 

[1]

This applet allows the viewer to calculate the length of one side of a triangle using the Pythagorean Theorem.
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Circles Around Pythagoras

Right Triangles (Geometry) 
Computer 
Activity 

[2]

A problem on finding the areas created within three concentric circles.
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Trigonometry Problem #1

Trigonometry (Geometry) 
Computer 
Activity 

[1]

Trigonometry problem with instant feedback.
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Trigonometry Problem #2

Trigonometry (Geometry) 
Computer 
Activity 

[1]

Trigonometry problem with instant feedback.
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Pythagorean Theorem

Pythagorean theorem (Geometry) 
Computer 
Support Material 

[1]

Discussion of exposition, history, and proof of Pythagorean Theorem
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Trigonometry Problem #3

Trigonometry (Geometry) 
Computer 
Activity 

[0]

Trigonometry problem with instant feedback.
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Visual Demonstration of the Py...

Pythagorean theorem (Geometry) 
Sketchpad 
Activity 

[0]

Students do a visual demonstration of the Pythagorean theorem based on Euclid’s proof. By shearing the squares on the sides of a right triangle, they create congruent shapes without changing...
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Pythagoras Plugged In: Proofs ...

Pythagorean theorem (Geometry) 
Sketchpad 
Activity 
$ 
[0]

This book guides students through a variety of proofs and applications of the Pythagorean theorem. By constructing and dynamically manipulating figures, students visualize the theorem and gain insight...
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A Right Triangle with Squares

Pythagorean theorem (Geometry) 
Sketchpad 
Activity 

[0]

Students make a square tool and use the tool to investigate the Pythagorean Theorem and its converse. The link to the activity itself is to a zip file that contains the activity in pdf format. ...
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Leonardo da Vinci's Proof

Pythagorean theorem (Geometry) 
Sketchpad 
Activity 

[0]

Students use reflection and rotation to build a sketch that demonstrates a famous proof by Leonardo. The link to the activity itself is to a zip file that contains both the activity in pdf format ...
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A Dynamic Proof

Pythagorean theorem (Geometry) 
Sketchpad 
Activity 

[0]

Students create a sketch in which a dramatic animation shows how the sum of the areas of two squares is equal to the area of the third square. The link to the activity itself is to a zip file tha...
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The Pythagorean Theorem

Pythagorean theorem (Geometry) 
Sketchpad 
Activity 

[0]

Students create both a visual and formal proof of the Pythagorean theorem, as well as view four additional geometric demonstrations of the theorem. These demonstrations are based on proofs by Bhaskara...
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The Pythagorean Theoremand M...

Pythagorean theorem (Geometry) 
TINspire 
Activity 

[0]

In this activity, students construct a triangle and ﬁnd all angle and side measures. They practice dragging the vertices to form certain types of triangles, and then they conﬁrm the Pyth...
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The Beach Race

Pythagorean theorem (Geometry) 
TINspire 
Activity 

[0]

In a beach race, contestants must swim to a point along the beach and then run to reach the ﬁnish line. Where should I aim to land on the beach so as to minimize my total time for the race? Stu...
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The Art Gallery Problem

Trigonometry (Geometry) 
TINspire 
Activity 

[0]

The question of where patrons should stand to enjoy the best view of a painting is one that art gallery curators must consider on a regular basis. For this activity, we will consider a painting that i...
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Perpendicular Slopes

Pythagorean theorem (Geometry) 
TINspire 
Activity 

[0]

In this activity, students investigate the “negative reciprocal” relationship between the slopes of perpendicular lines. The final phase of the activity is appropriate for more advanced students as th...
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