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Topic (Course) 
Technology 
Type 
$? 
Rating 

Place Value Chart

Number sense (Math 2) 
iPad 
Tool 
$ 
[3]

This iPad/iPhone/iPod touch app provides an interactive place value chart. You can place tokens by touching the screen and move them around with your finger(s). Moving tokens between different places ...
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Pop the Bubbles

Number sense (Math 2) 
Flash 
Tool 

[1]

Students practice typing numbers with Pop the Bubble.
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The Doctor X Amazing Griddable...

Number sense (Math 2) 
JavaScript 
Tool 

[1]

A 10 x 10 interactive grid with 10 possible colors to use. Start by drawing rectangles to count. Use the quick tour to consider multiplication, the distributive property, prime vs composite, square nu...
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Modular Arithmetic Lesson

Number sense (Math 3) 
Java Applet 
Activity 

[1]

Clock (or modular) arithmetic is arithmetic you do on a clock instead of a number line. Investigate arithmetic using a 12hour, 10hour, and 2hour clock.
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Clock Arithmetic and Cryptogra...

Number sense (Math 3) 
Java Applet 
Lesson Plan 

[2]

The following discussions and activities are designed to lead the students to practice their basic arithmetic skills by learning about clock arithmetic (aka modular arithmetic) and cryptography.
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Clocks and Modular Arithmetic ...

Number sense (Math 3) 
Java Applet 
Support Material 

[0]

A dialogue between a student and a mentor on the relationship between clocks and modular arithmetic.
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Cryptography and Ciphers Dialo...

Number sense (Math 3) 
Java Applet 
Support Material 

[0]

A dialogue between a student and a mentor on the relationship between cryptography and ciphers.
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What are Remainders Dialogue

Number sense (Math 3) 
Java Applet 
Support Material 

[0]

A dialogue between a student and a mentor about remainders.
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5Tile Jigsaw Puzzle

Number sense (Math 3) 
Flash 
Tool 

[0]

The goal of this game is to reassemble the tiles in a square grid, in repeated numerical sequence.
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Aritmética del reloj

Number sense (Math 3) 
Java Applet 
Tool 

[0]

Los estudiantes aprenden operaciones de aritmética modular trabajando con diferentes tipos de relojes. Parámetros: Número de horas en el reloj.
versión en inglés
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Caesar Cipher

Number sense (Math 3) 
Java Applet 
Tool 

[0]

Students practice simple arithmetic skills by encoding and decoding messages using an affine cipher.
Spanish version also available.
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Caesar Cipher II

Number sense (Math 3) 
Java Applet 
Tool 

[0]

Students practice simple arithmetic skills by encoding and decoding messages to determine the form for an affine cipher.
Spanish version also available.
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Caesar Cipher III

Number sense (Math 3) 
Java Applet 
Tool 

[0]

Students practice their reasoning and arithmetic skills by decoding messages to determine the form for an affine cipher.
Spanish version also available.
More: lessons, discussions, ratings, reviews,...

Clock Arithmetic

Number sense (Math 3) 
Java Applet 
Tool 

[1]

Students learn about modular arithmetic operations through working with various types of clocks. Parameters: Number of hours on the clock.
Spanish version also available.
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Clock Arithmetic on a 10hour ...

Number sense (Math 3) 
Java Applet 
Tool 

[0]

On a 10hour clock, there are only 10 numbers in the whole number system. However, every number has lots of different names. For example, the number before 1 is 0, so 10 = 0 on a 10hour clock.
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Clock Arithmetic on a 12hour ...

Number sense (Math 3) 
Java Applet 
Tool 

[0]

On a 12hour clock, there are only 12 numbers in the whole number system. However, every number has lots of different names. For example, the number before 1 is 0, so 12 = 0 on a 12hour clock.
More: lessons, discussions, ratings, reviews,...

Clock Arithmetic on a 2hour c...

Number sense (Math 3) 
Java Applet 
Tool 

[0]

On a 2hour clock, there are only 2 numbers in the whole number system. However, every number has lots of different names. For example, the number before 1 is 0, so 2 = 0 on a 2hour clock.
More: lessons, discussions, ratings, reviews,...

Compare Numbers

Number sense (Math 3) 
Flash 
Tool 

[0]

Compare number size and place the greater or less than sign in the correct place. Use your choice of three levels of numbers to 100, 1000, or to 10000.
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El cifrado de César

Number sense (Math 3) 
Java Applet 
Tool 

[0]

Los estudiantes practican aritmética sencilla codificando y decodificando mensajes mediante un cifrado afín.
versión en inglés
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El cifrado de César II

Number sense (Math 3) 
Java Applet 
Tool 

[0]

Los estudiantes practican aritmética sencilla codificando y decodificando mensajes para determinar la forma de un cifrado afín.
versión en inglés
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El cifrado de César III

Number sense (Math 3) 
Java Applet 
Tool 

[0]

Los estudiantes practican sus habilidades matemáticas y de razonamiento mediante la decodificación de mensajes para determinar la forma de un cifrado afín.
versión en inglés
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Gold Coin Game

Number sense (Math 3) 
Flash 
Tool 

[0]

Divide the coins evenly between all the Leprechaun pots.
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Guess My Number 1100

Number sense (Math 3) 
Flash 
Tool 

[0]

A guessing game to find out what number the computer is thinking of. The activity can be used to develop number recognition and sequencing up to 100.
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HandsOn Math: Graph Cubes

Number sense (Math 3) 
iPad 
Tool 
$ 
[0]

Use simple gestures to drag and drop blocks, placing them in columns to build bar graphs. The author and designer coined the term "artificially intelligent math manipulative" to describe how using the...
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Infinity

Number sense (Math 3) 
Flash 
Tool 

[0]

In this exercise, you see a number "on the path" to infinity. If you see a larger number, that is, closer to infinity, in one of the balloons surrounding infinity, click that number, and it will take ...
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