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Topic (Course) 
Technology 
Type 
$? 
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Table of Natural Logarithms

natural log (PreCalculus) 
Flash 
Tool 

[2]

A table of common logarithms, with a Flash tutorial on how to use the table.
College Cram charges access fees by the month or by the semester for most resources. To get a preview of their tools...
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The Imaginary Number i

Complex Numbers (PreCalculus) 
Flash 
Tool 

[0]

Flash tutorial introducing i: definition, square roots of negative integers, raising i to powers, and complex numbers. College Cram charges access fees by the month or by the semester for most res...
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Using Logarithms

properties (PreCalculus)+ 
Flash 
Tool 

[0]

Flashbased introduction to common logs, natural logs, e, and antilogs, with definitions of "characteristic" and "mantissa." College Cram charges access fees by the month or by the semester for mo...
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A Tabular View of Limits

limits (PreCalculus) 
Java Applet 
Tool 

[0]

A Java applet that presents limits from a tabular perspective. Includes a rescalable presentation version with large fonts.
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Absolute Value Parts I4

absolute value (PreCalculus) 
Java Applet 
Tool 

[2]

Students are asked to predict what an absolute value graph will look like with given parameters. Then they can use a graphing utility that is on the same page to test their predictions. Feedback is g...
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Animated MatrixVector Multipl...

operations with matrices (PreCalculus) 
Java Applet 
Tool 

[1]

Demonstration of matrix product of 5 by 5 matrix with a 5 by 1 column vector.
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Another Hilbert Curve

limits (PreCalculus)+ 
Java Applet 
Tool 

[0]

This activity allows the user to show how changing the generator slightly in a line replacement fractal can have a significant impact on the final product.
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Area of an Ellipse  Math Open...

ellipses (PreCalculus) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the area of an ellipse.
The major and minor axes can be dragged and the area is continuously recalculated.
The ellipse has a g...
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Cantor's Comb

geometric (PreCalculus) 
Java Applet 
Tool 

[0]

Students learn about fractions between 0 and 1 by repeatedly deleting portions of a line segment, also learning about properties of fractal objects. Parameter: fraction of the segment to be deleted...
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Changing Cost per Minute

increasing, decreasing and constant rates of change (PreCalculus) 
Java Applet 
Tool 

[3]

Users learn how modifications in the rate affect the linear graph displaying accumulation (the total cost of calls).
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Chaos Game

limits (PreCalculus)+ 
Java Applet 
Tool 

[0]

This activity allows the user to see patterns in seemingly random dot arrangements and explore the chaos game by changing the number of vertices, and the number of dots displayed.
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Chaos In the Classroom  Visua...

domain and range of functions (PreCalculus)+ 
Java Applet 
Tool 

[1]

The logistic equation is a simple dynamical system that illustrates very nicely the emergence of complex chaotic behavior from a single, simple equation. This lesson plan is targeted towards high scho...
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Complex Numbers Applet

Properties of Rational Functions (PreCalculus) 
Java Applet 
Tool 

[0]

This applet does symbolic calculation of complex numbers. This means that you can enter integers and fractions for the component values of a complex number (real and imaginary). Values with numbers th...
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Congruence of Quadratic Functi...

quadratic (PreCalculus) 
Java Applet 
Tool 

[0]

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Conic Flyer

general, standard forms of equations (PreCalculus) 
Java Applet 
Tool 

[3]

This activity allows the user to manipulate the graphs of the conic sections by changing the constants in their respective equations. The equation and variable values are displayed and change as the u...
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Continuity: An Informal Approa...

continuity (PreCalculus) 
Java Applet 
Tool 

[0]

A Java applet that introduces the concepts of continuity and continuous functions in an informal manner. Includes a rescalable display version with large fonts.
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Cosine Engine

domain and range of functions (PreCalculus)+ 
Java Applet 
Tool 

[0]

With this applet, students study the extrema of the function A cos^2 (t) + B cos(t) + C. A parabola is drawn with studentsupplied coefficients and constant, and the unit circle is drawn below, so th...
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Crear Sucesiones

Sequences and Series (PreCalculus) 
Java Applet 
Tool 

[0]

Los estudiantes aprenden de patrones numéricos en sucesiones y recursiones especificando un número inicial, la razón (geométrica) o la diferencia (aritmética).
versión en inglés
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Data Flyer

linear (PreCalculus)+ 
Java Applet 
Tool 

[2]

This activity allows the user to plot a set of (x,y) ordered pairs and graph a function on the same coordinate plane. The applet allows the manipulation of a function of the form y = f(x).
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Double Ferris Wheel

graphs and parameters of these functions (PreCalculus) 
Java Applet 
Tool 

[1]

This is a Java Sketchpad animation of a double ferris wheel; the path of one passenger is traced as the ride spins.
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Drawing Exponential Curve

exponential (PreCalculus) 
Java Applet 
Tool 

[0]

The applet manipulates an apparatus that draws an exponential curve. The trace of point D becomes the exponential curve by maintaining the equality of the ratio AB:AC = BE:CD.
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Drawing Hyperbola

hyperbolas (PreCalculus) 
Java Applet 
Tool 

[0]

Interactive page to draw hyperbolas.
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Drawing Parabola

parabolas (PreCalculus) 
Java Applet 
Tool 

[0]

The applet manipulates an apparatus that draws a parabola from its definition that the distance from a fixed point called the focus is equivalent to the distance from a fixed line called the directri...
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El peine de Cantor

geometric (PreCalculus) 
Java Applet 
Tool 

[0]

Los estudiantes aprenden sobre las fracciones entre 0 y 1 a través de la eliminación repetitiva de porciones de un segmento de recta, aprendiendo a la vez sobre las propiedades de objetos fractales...
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Ellipse Game

foci (PreCalculus) 
Java Applet 
Tool 

[1]

Try to click on one of the foci of the ellipse; feedback is given if you get closer/farther away.
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