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Clock Arithmetic and Cryptogra...

Operations with numbers (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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Magic Squares

Operations with numbers (Math 3)+ 
Java Applet 
Lesson Plan 

[0]

Designed primarily for middle school and older elementary school students, this Math Forum Web unit includes classroom activities for four different squares: Lo Shu, Sator, Durer, and Franklin, three ...
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Operations with Integers

Operations with numbers (Math 3)+ 
Computer 
Lesson Plan 

[1]

Lesson plan and tutorial for the shareware program, Math Stars, by Roger Clary. Includes ideas for introducing integers even if the software is not used.
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Pattern Block Fractions

Operations with numbers (Math 3)+ 
Java Applet 
Lesson Plan 

[0]

This lesson focuses on the identification of fractional parts of a region and records them in standard form. Students continue to develop communication skills by working together to express their unde...
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Addition Worksheets Story

Operations with numbers (Math 3)+ 
JavaScript 
Story 

[0]

Jeff LeMieux, writes about how he uses the Javascript page, Addition Worksheets for whole number addition of selectable length numbers.
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Multiplication Worksheets Stor...

Operations with numbers (Math 3)+ 
JavaScript 
Story 

[0]

Jeff LeMieux, writes about how he uses the JavaScript page, Multiplication Worksheets.
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Clocks and Modular Arithmetic ...

Operations with numbers (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...

Operations with numbers (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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Integers

Operations with numbers (Math 3)+ 
Computer 
Support Material 

[1]

An illustrated collection of explanations, with questions for students to work out and submit for automatic feedback.
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What are Remainders Dialogue

Operations with numbers (Math 3)+ 
Java Applet 
Support Material 

[0]

A dialogue between a student and a mentor about remainders.
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Abacus

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[1]

An electronic abacus that can be used to do arithmetic.
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Arithmetic Four

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[5]

This activity allows the user to practice addition, subtraction, multiplication, and division.
...
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Aritmética cuatro

Operations with numbers (Math 3)+ 
Java Applet 
Tool 

[0]

Un juego parecido a Fracción Cuatro, pero en vez de preguntas acerca de fracciones, el jugador tiene que responder preguntas sobre aritmética (suma, resta, multiplicación y división) para ganarse u...
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Aritmética del reloj

Operations with numbers (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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Base 10 Subtraction Mathlets

Operations with numbers (Math 3)+ 
JavaScript 
Tool 

[0]

These mathlets illustrate the standard base 10 subtraction algorithm. They provide randomly generated subtraction problems with up to 4 decimal places and allow the student to step through the solutio...
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Big Blue Calculator

Operations with numbers (Math 3)+ 
Flash 
Tool 

[1]

Use the Big Blue Calculator on an interactive whiteboard to show students how the calculator works. The display can be hidden using the button at its lower left corner.
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Bowling

Operations with numbers (Math 3)+ 
Excel 
Tool 

[0]

Students learn to calculate their bowling score.
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Broken Calculator

Operations with numbers (Math 3)+ 
Flash 
Tool 

[2]

Eric's calculator has lost most of its keys. Can you find a way for the leftover keys to generate the target numbers?
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Caesar Cipher

Operations with numbers (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

Operations with numbers (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

Operations with numbers (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.
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Capture Board Game

Operations with numbers (Math 3)+ 
Flash 
Tool 

[0]

The goal of this game is to clear the board. Tiles may be dragged the number of spaces shown on their face, and in the directions indicated by the crosshairs.
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Clock Arithmetic

Operations with numbers (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 ...

Operations with numbers (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 ...

Operations with numbers (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.
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