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Technology 
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Modular Arithmetic Lesson

Number sense (Math 4) 
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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Working with Place Value

Place value (Math 4)+ 
Java Applet 
Activity 

[2]

Guided, interactive activities help students understand the concept of place value, using the number line, base blocks, and place value charts.
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SMILE Mathematics Activity

Number sense (Math 4) 
TI73 Explorer 
Activity 

[0]

Stepbystep directions on how to use the the five SMILE Mathematics computer games: MiniMax, Box, Matching Fractions, Angle, and Rhino.
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Clock Arithmetic and Cryptogra...

Number sense (Math 4) 
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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Working with Place Value

Place value (Math 4)+ 
Java Applet 
Lesson Plan 

[1]

Guided, interactive activities help students understand the concept of place value, using the number line, base blocks, and place value charts. Teacher information includes a list of targeted objectiv...
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In Round Numbers, TI15

Place value (Math 4) 
TI15 
Lesson Plan 

[2]

Students will follow a guided discovery lesson to develop and test rules for rounding whole numbers and decimal fractions. They will use the information to solve a realworld problem.
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Number Bases

Place value (Math 4) 
Flash 
Support Material 

[0]

This interactive multimedia tutorial discusses using bases other than ten for counting. Octal and binary are discussed in particular.
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Clocks and Modular Arithmetic ...

Number sense (Math 4) 
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 4) 
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 4) 
Java Applet 
Support Material 

[0]

A dialogue between a student and a mentor about remainders.
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Millions and Billions

Large numbers (Math 4) 
JavaScript 
Support Material 

[0]

Examples and illustrations of large numbers to demonstrate that a billion is 1000 times as large as a million.
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Touch Natural Numbers

Place value (Math 4) 
Android 
Tool 

[0]

With this app you can:

Estimating Whole Numbers and D...

Large numbers (Math 4) 
Computer 
Tool 
$ 
[0]

Alterable worksheet in which students estimate the positions of points on unmarked number lines, on the intervals [0, 100], [0,1000], [10, 0], [100, 0]. Fee required for printing: see this page.
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Estimating Whole Numbers and D...

Large numbers (Math 4) 
Computer 
Tool 
$ 
[0]

Alterable worksheet in which students estimate the positions of points on unmarked number lines, on the intervals [0, 1], [0, 100], [0, 1000], [0, 10000], [10, 10], [100, 0]. Fee required to print;...
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5Tile Jigsaw Puzzle

Number sense (Math 4) 
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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Bead Numbers

Place value (Math 4) 
Flash 
Tool 

[0]

This activity uses an interactive abacus to help develop and reinforce pupils' understanding of place value. The abacus has three pegs onto which beads are dropped, representing units, tens, and hundr...
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Compare Numbers

Number sense (Math 4) 
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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Comparing Numbers

Place value (Math 4)+ 
Flash 
Tool 

[0]

This module introduces place value, place holders, comparing numbers and using the inequality signs > and < through fact sheets, worksheets, and a game. The accompanying quiz offers three levels of di...
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DigitWize

Place value (Math 4) 
Flash 
Tool 

[0]

Choose integers or numbers with decimal places, then try to make up the target number by choosing numbers from the units, tens, hundreds, depending on your original choice. Available in Arabic, Bengal...
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Infinity

Large numbers (Math 4) 
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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Number Grid Level 3

Number sense (Math 4) 
Flash 
Tool 

[1]

Third level in a collection of five Number Grid activities. It displays a section of a matrix containing a set of consecutive whole numbers. A move from one number to the next within a row is a change...
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Number Grid Level 4

Number sense (Math 4) 
Flash 
Tool 

[1]

Fourth level in a collection of five Number Grid activities. It displays a section of a matrix containing a set of consecutive whole numbers. A move from one number to the next within a row is a chang...
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Number Grid Level 5

Number sense (Math 4) 
Flash 
Tool 

[4]

Fifth level in a collection of five Number Grid activities. It displays a section of a matrix containing a set of consecutive whole numbers. A move from one number to the next within a row is a change...
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Number Puzzle

Number sense (Math 4) 
Flash 
Tool 

[0]

Change the numbers in the blocks at the bottom of the pyramids and explore the effect on the number in the top block. What's the highest total you can get using the numbers 1 to 5 only once?
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Number Track

Number sense (Math 4) 
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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