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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

Number Theory

Order of operations (Math 5)+ 
Computer 
Support Material 

[2]

Collection of illustrated descriptions intended to develop order of operations and properties of addition and multiplication. Includes questions for students to work out, with automated feedback.
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Number Track

Ordering numbers (Math 1)+ 
Flash 
Tool 

[0]

Place the number tiles into the correct order on the track. There are three levels of difficulty, with an option to make your own number track arrangements.
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Number Train

Number sense (PreKindergarten) 
Computer 
Tool 

[0]

As the shockwave activity opens there is a train engine labeled with a "1" and a car. Students are directed by sound and text to move the car behind the engine. After ten cars have been added to the t...
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Number Triangle Level 1

Addition (Math 2)+ 
Flash 
Tool 

[2]

First level in a set of three Number Triangle activities. They are an electronic version of flash cards emphasizing fact families. An addition/subtraction Number Triangle has two addends and a sum; a ...
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Number Triangle Level 2

Multiplication (Math 2)+ 
Flash 
Tool 

[1]

Second level in a set of three Number Triangle activities. They are an electronic version of flash cards emphasizing fact families. An addition/subtraction Number Triangle has two addends and a sum; a...
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Number Triangle Level 3

Operations with numbers (Math 2)+ 
Flash 
Tool 

[2]

Third level in a set of three Number Triangle activities. They are an electronic version of flash cards emphasizing fact families. An addition/subtraction Number Triangle has two addends and a sum; a ...
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Number Works Applet

Number theory (Math 5)+ 
Java Applet 
Tool 

[0]

This applet calculates numbers, such as prime numbers, prime factors, least common multiple (LCM), greatest common divisor (GCD) or also called highest common factor (HCF), ratio simplifications. The ...
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Number Worlds: Visual and expe...

Number sense (Math 5)+ 
Computer 
Support Material 

[1]

Recent research demonstrates that many issues related to the structure of natural numbers and the relationship among numbers are not well grasped. In this article, the computerbased learning environm...
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NumberWorlds

Number sense (Math 6)+ 
Java Applet 
Tool 

[1]

With this applet, students can investigate various properties of numbers including patterns of even, odd, square and prime numbers, as well as multiples and factors. There are also different "worlds" ...
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Number_Pyramid

Addition (Kindergarten)+ 
iPad 
Tool 
$ 
[0]

Number pyramids are often used to practice addition and subtraction in German primary schools. Each brick's number is the sum of the two numbers under it. Place the missing numbers in the empty bricks...
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Numberline Applet

Integers (Math 4)+ 
Java Applet 
Tool 

[1]

See how addition and subtraction work using a numberline.
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Numberline Basic

Integers (Math 5)+ 
Java Applet 
Tool 

[2]

Demonstrates addition and subtraction on a number line.
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Numbers & Letters Games

Operations with numbers (Math 4)+ 
Flash 
Tool 

[0]

In the numbers game, the computer will select six numbers (from a given group of four large and twenty small numbers). Students must use those numbers and the four basic operations to make the target ...
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Numbers 123

Operations with numbers (PreKindergarten)+ 
iPhone 
Tool 
$ 
[0]

Numbers 123 is a way to introduce and reinforce basic number concepts. For all the times you and your child have a minute or two, this iPhone application is the perfect opportunity to practice coun...
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Numbers Unit Quiz

Properties of numbers (Math 7)+ 
JavaScript 
Tool 

[0]

This tool allows the user to take an online interactive quiz on decimals, percentages, exponents, square roots, and integers.
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Numbers and Counting

Whole numbers (Math 5)+ 
Flash 
Support Material 

[0]

This multimedia tutorial discusses numerals and digits in terms of counting.
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Numbers as Measurements (Amsco...

Measurement (Math 6)+ 
Flash 
Support Material 

[0]

This lesson explains how to find measurements of object/shapes, and deals with significant digits, precision/accuracy, and ways of expressing error in measurement.
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Numbers to Line

Counting (PreKindergarten)+ 
Flash 
Tool 

[1]

Fill the number line by clicking a tick mark on the number line and dragging the cursor to the number that belongs there.
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Numeral Tree

Counting (PreKindergarten)+ 
Flash 
Tool 

[0]

Drag the numbers onto the tree in order from least to greatest. The highest number will be the number of branches on the tree.
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Numerical Analysis

Recursion and special sequences (Algebra II)+ 
Computer 
Lesson Plan 

[0]

This investigation illustrates the use of iteration, recursion and algebra to model and analyze a changing fish population. Graphs, equations, tables, and technological tools are used to investigate t...
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Numerical Approximations of De...

Riemann and trapezoidal sums (Calculus) 
Computer 
Support Material 

[0]

Describes and compares lefthand, righthand, trapezoidal, midpoint, and Simpson's rules for approximating an integral.
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Numerical Exploration of Limit...

Est. lims. w/ graphs or tables (Calculus) 
Computer 
Support Material 

[0]

Tables suggest that a particular function does not have a limit at a certain value.
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Numerical Exploration of Limit...

Est. lims. w/ graphs or tables (Calculus) 
JavaScript 
Tool 

[0]

Use tables to explore the limit of sin(nx)/(mx).
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Numerical Exploration of Limit...

Est. lims. w/ graphs or tables (Calculus) 
JavaScript 
Tool 

[0]

Use tables to investigate whether the limit as x goes to 2 of 1/(x2)^n exists.
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Numerical Integration

Riemann sums: L, R, and M. (Calculus) 
Java Applet 
Tool 

[2]

View left and right Riemann sums and trapezoidal and Simpson's rule approximations for various functions.
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