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Topic (Course) 
Technology 
Type 
$? 
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Pythagoras' Mystery Tablet Pro...

Irrational (Algebra) 
Java Applet 
Activity 

[1]

Students use an applet to compute the area of a square based on its side length. They then use this information to determine whether it is possible to get exact side lengths for certain areas.
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Pythagoras' Mystery Tablet Tea...

Irrational (Algebra) 
Java Applet 
Lesson Plan 

[1]

Links to NCTM Standards, related activities, lessons, and other Web resources to use with the Pythagoras' Mystery Tablet activity
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Rectangles and Squares Activit...

Irrational (Algebra) 
Java Applet 
Lesson Plan 

[1]

Students investigate the attributes of squares and rectangles including length of side, area and perimeter using an interactive web page (technology) and also geoboards (manipulative). After working t...
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Addition of Signed Numbers (Am...

Integers (Algebra) 
Flash 
Support Material 

[0]

This minilesson explains the addition of signed numbers, i.e. numbers with the same or opposite signs.
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Multiplication of Signed Numbe...

Integers (Algebra) 
Flash 
Support Material 

[0]

This minilesson explains how to multiply numbers with the same or opposite signs using the properties of real numbers.
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Radicals and the Rational Numb...

Rational (Algebra) 
Flash 
Support Material 

[0]

This minilesson explains radicals, roots, and their relation to rational numbers.
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The Integers (Amsco Integrated...

Whole (Algebra)+ 
Flash 
Support Material 

[0]

This minilesson explains basic concepts of counting numbers, whole numbers, and integers.
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The Integers (Amsco Integrated...

Number Systems (Algebra) 
Flash 
Support Material 

[0]

This minilesson explains counting numbers, whole numbers, and integers, including types of sets, subsets of integers, ordering the integers, symbols of inequality, and absolute value.
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The Irrational Numbers (Amsco ...

Irrational (Algebra) 
Flash 
Support Material 

[0]

This minilesson explains irrational numbers, squares, and square roots.
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Touch Fraction

Whole (Algebra)+ 
Android 
Tool 

[0]

Touch Fraction lets you visualize positive and negative
fractions  and zoom into equivalent fractions using the
rational representation diagram.
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About Real Numbers

Real (Algebra) 
Flash 
Tool 

[0]

Flash tutorial introducing the number line, absolute value, and what kinds of numbers make up real numbers. College Cram charges access fees by the month or by the semester for most resources. To ...
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Circle 3

Number Systems (Algebra) 
Java Applet 
Tool 

[2]

Position the numbers inside of the circles and intersections of circles in such a way that the three numbers in each of the circles sums (adds up) to three.
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Converting Units

Number Systems (Algebra) 
Java Applet 
Tool 

[3]

Use a simple system for converting units.
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Factor Tree

Natural (Algebra) 
Java Applet 
Tool 

[10]

This manipulative allows you to construct factor trees (to the prime factors) for two numbers, and then from the prime factorization, you are asked to identify the Least Common Multiple (LCM) and the ...
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Numberline Basic

Integers (Algebra) 
Java Applet 
Tool 

[2]

Demonstrates addition and subtraction on a number line.
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Percentages

Number Systems (Algebra) 
Java Applet 
Tool 

[3]

Discover relationships between fractions, percentages, and decimals.
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Pythagoras' Mystery Tablet

Irrational (Algebra) 
Java Applet 
Tool 

[1]

Try typing different side lengths as fractions or as decimals. Watch how this affects the computed area of the square at the bottom. How close can you get to the area values on Pythagoras' Tablet?
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Rational Numbers Triangle

Rational (Algebra) 
Java Applet 
Tool 

[1]

Explore a triangular array that contains every positive
rational number exactly once.
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Sieve of Eratosthenes

Number Systems (Algebra) 
Java Applet 
Tool 

[0]

This virtual manipulative displays a grid containing numbers from 1 to 200. You can use it to explore patterns and relationships involving multiples.
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Tic Tac Go

Integers (Algebra) 
Java Applet 
Tool 

[18]

Signednumber arithmetic game for one or two players.
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Algebra Definitions

Rational (Algebra)+ 
JavaScript 
Tool 

[0]

The user reviews definitions of important algebra terms. After viewing further explanations and some examples, users can interactively test their understanding of the definitions of important algebra...
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Properties of Integers

Integers (Algebra) 
JavaScript 
Tool 

[1]

The user reviews certain properties of integers. After viewing some examples, users can interactively test their understanding of these properties with a short mathworkout.
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Properties of Real Numbers

Real (Algebra) 
JavaScript 
Tool 

[0]

The user reviews some basic definitions and properties of real numbers. After viewing explanations and examples of the properties, users can interactively test their understanding of the properties o...
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