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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

The Abacus in Various Number S...

Subtraction (Math 6) 
Java Applet 
Tool 

[0]

An interactive Java applet showing one or two Russian abacuses with options to select the base of the number system and the number of wires. The applet displays the number matching the current config...
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Touch Natural Numbers

Subtraction (Math 6) 
Android 
Tool 

[0]

With this app you can:

XP Math: Solving Subtraction E...

Subtraction (Math 6) 
Flash 
Tool 

[0]

In this game, students race the clock to solve simple subtraction equations.
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Episode 8: Subtraction

Subtraction (PreKindergarten) 
Flash 
Lesson Plan 

[0]

Activities to introduce the concept of subtraction as the inverse of addition.
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Count Us In: Game 8

Subtraction (PreKindergarten) 
Flash 
Tool 

[0]

Count the number of pins that will still be standing. Type in that number. Click on the bowling ball or hit enter. If the number is correct the ball will bowl. Keep going until you have reached zero. ...
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HandsOn Math: Base Ten Blocks

Subtraction (PreKindergarten) 
iPad 
Tool 
$ 
[0]

HandsOn Math: Base Ten Blocks is a virtual math manipulative playground where students explore and discover place value concepts and also learn addition and subtraction with regrouping. Our Base T...
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Number Line Arithmetic

Subtraction (PreKindergarten) 
Java Applet 
Tool 

[1]

Illustrates arithmetic operations using a number line.
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Whole Calculator

Subtraction (PreKindergarten) 
Android 
Tool 

[0]

This app functions as a calculator for the set of the natural numbers (N). Type the numerical operations and view the both inputs and the result in words.
More: lessons, discussions, ratings, reviews,...

Sum and Difference Formulas (T...

Sum and Difference (Trigonometry) 
Flash 
Support Material 

[1]

This minilesson explains sum and difference formulas for sine and cosine functions.
More: lessons, discussions, ratings, reviews,...

Using Sum and Difference Formu...

Sum and Difference (Trigonometry) 
Flash 
Support Material 

[0]

This minilesson explains more details of how to find the values of the sine and the cosine functions using the sum and difference formulas.
More: lessons, discussions, ratings, reviews,...

Formula for sin(A+B)

Sum and Difference (Trigonometry) 
Java Applet 
Tool 

[0]

This applet teaches students geometrically that sin(A+B) = sin(A)cos(B) + cos(A)sin(B). Students can change the values of A and B.
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InteGreat!

Summation notation (Calculus) 
Java Applet 
Tool 

[0]

InteGreat! allows the user to visually explore the idea of integration through approximating the integral value with partitions. The activity integrates a function and displays the value of the defini...
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Cuadros en un Cuadro

Summation notation (Discrete Math) 
Java Applet 
Technology PoW 

[0]

Si tienes una tabla de damas que mide 50 x 50 con cuadros pequeños adentro, cuántos cuadros hay en total en toda la tabla?
versión en inglés
NOTE: A free login is require...
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Squares in a Square

Summation notation (Discrete Math) 
Java Applet 
Technology PoW 

[3]

If you have a checkerboard that is 50x50 with small squares inside it, how many squares will there be all together? Students use a Java applet from the Freudenthal Institute to think about the ques...
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Surface Area and Volume

Surface area (Geometry) 
Java Applet 
Lesson Plan 

[1]

An introduction to the concepts of surface area and volume.
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Euclid's Elements, Book I, Def...

Surface area (Geometry) 
Computer 
Support Material 

[0]

Gives Euclid's original definition of surface and then examines the definition's validity and durability.
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Surface Area Formulas

Surface area (Geometry) 
JavaScript 
Support Material 

[0]

The user reviews the formulas for the surface area of threedimensional objects.
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Surface Area and Volume (Getti...

Surface area (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains concepts and important properties related to the surface area and volume of solids.
More: lessons, discussions, ratings, reviews,...

Surface Area: Prisms, Cylinder...

Surface area (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains the concept of surface area and uses important properties of cubes, prisms, pyramids, cylinders, cones, and spheres to apply the relevant formulas for determining the surface...
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Surface Areas of Solids (Amsco...

Surface area (Geometry) 
Flash 
Support Material 

[0]

This minilesson explains how to find the surface area of solids such as rectangular solids, cubes, and right circular cylinders.
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A Plethora of Polyhedra

Surface area (Geometry) 
Java Applet 
Tool 

[4]

This is a free JAVA applet that helps users to study spatial geometry in a dynamic and interactive way. Using it, the user can rotate, zoom out, zoom in and translate a plethora of polyhedra. Moreover...
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K3DSurf for 3D Mathematic draw...

Surface area (Geometry) 
Computer 
Tool 

[1]

K3DSurf is a program to visualize and manipulate mathematical models in three, four, five and six dimensions.
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Math Water Table

Surface area (Geometry) 
JavaScript 
Tool 

[0]

Math Water Table is an online liquid simulator that
models the flow of water through triangular and
rectangular shapes.
More: lessons, discussions, ratings, reviews,...

Space Blocks

Surface area (Geometry) 
Java Applet 
Tool 

[1]

Create and discover patterns using three dimensional blocks.
More: lessons, discussions, ratings, reviews,...

Surface Area

Surface area (Geometry) 
Flash 
Tool 

[0]

Investigate area as the total area of the surface of a space figure. Derive surface area formulas for common three dimensional figures. This online activity lets students interactively change the dim...
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