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Topic (Course) 
Technology 
Type 
$? 
Rating 

Simple Scales

Number sense (PreKindergarten)+ 
Flash 
Tool 

[0]

Use the Simple Scales to weigh the bears. This is an openended activity that lends itself to problem solving activities.
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Number Recognition to 10

Number sense (PreKindergarten)+ 
Flash 
Tool 

[0]

This activity develops number recognition up to 10. The activity begins with sequencing the numbers and words one to ten (1 to 10). After completing this first part, the number line resets and the seq...
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Number Balance

Number sentences (Math 1)+ 
Flash 
Tool 

[0]

An activity for developing understanding of simple equations. Hide individual numbers or symbols as you wish. Designed for teacherled investigations. Find this activity in this list for a Word docume...
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Number Balance KS2

Number sentences (Math 3)+ 
Flash 
Tool 

[0]

An activity for developing understanding of simple equations. Hide individual numbers or symbols as you wish. Uses the less than and greater than symbols as well as equals.
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Ask Dr. Math FAQ: Prime Number...

Number theory (Math 3)+ 
Java Applet 
Support Material 

[0]

Answers to the frequently asked questions including: What is a prime number? How can you find prime numbers? What's the Sieve of Eratosthenes? What's the largest known prime?
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Sieve of Eratosthenes

Number theory (Math 3)+ 
Java Applet 
Tool 

[0]

This virtual manipulative displays a grid containing numbers from 1 to 200. You can use it to explore patterns and relationships involving multiples.
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Color by Numbers

Number theory (Math 3)+ 
Sketchpad 
Tool 

[0]

Students investigate patterns produced on a grid of numbers generated through addition and multiplication of the whole numbers. The focus is on elementary number theory concepts such as even/odd, fact...
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Odd or Even

Number theory (Math 3)+ 
Flash 
Tool 

[0]

Drag and drop the number tiles to their correct position on the Venn diagram.
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Venn Diagrams

Number theory (Math 3)+ 
Flash 
Tool 

[0]

This drag and drop Venn Diagram simulation lets students solve a mathematical problem based on number properties using a range of different Venn diagrams. There are 5 different levels involving a rang...
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The Hispaniola Water Shortage ...

Number theory (Math 4)+ 
Java Applet 
Activity 

[0]

Gives students an introduction to number theory by emphasizing the significance of starting with containers of different parity, as compared to containers of the same parity. Some implied work with mo...
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The Hispaniola Water Shortage ...

Number theory (Math 4)+ 
Java Applet 
Lesson Plan 

[0]

Links to Standards, activities, lessons, Ask Dr. Math archives, vocabulary, other resources.
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The Hispaniola Water Shortage

Number theory (Math 4)+ 
Java Applet 
Tool 

[0]

Students are asked to use virtual containers of water, of definite sizes, and combine them in various ways to come up with as many different resulting volumes as possible.
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Properties of Numbers

Number theory (Math 4)+ 
Flash 
Tool 

[0]

Test yourself with these questions on properties of numbers.
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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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Maths Hangman

Number theory (Math 5)+ 
Flash 
Tool 

[0]

Guess the words in this hangman game using vocabulary from geometry, algebra, number, and statistics.
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Logic Ladder Activities

Number theory (Math 6)+ 
TI73 Explorer 
Activity 

[0]

Stepbystep directions on how to use the Logic Ladder App. One activity, Play Factor, involves filling in the prime factorization of a given number. The second activity, Play Classic, involves orderi...
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Number Curiosities App

Number theory (Math 6)+ 
TI73 Explorer 
Tool 

[0]

Illustrates and animates interesting facts about numbers 0 25. Students can traverse a number line with their TI73 Explorer™ to see factorization, an interesting geometric fact, a number sentence or...
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Play with Spirals Information ...

Number theory (Math 7)+ 
Computer 
Lesson Plan 

[0]

Suggestions of question prompts to provide students as they use Play with Spirals, one of the Alive Maths microworlds.
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Logic Ladder App

Number theory (Math 7) 
TI73 Explorer 
Tool 

[0]

Students find the prime factorization of random numbers, or use clues to determine the correct sequence of various shapes. Change shapes to find a correct sequence using clues.
For stepb...
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Play with Spirals

Number theory (Math 7)+ 
JavaScript 
Tool 

[0]

This is the Spirals microworld. You will be making beautiful shapes and designs using the simple mathematical idea of iteration.
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Numerical Integration: Trapezo...

Numeric Approx. to Def. Ints. (Calculus) 
Java Applet 
Tool 

[0]

Graphs the function you enter and the area under the curve, and calculates this area according to the Trapezoid Rule and Simpson's Rule.
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Fossil Fuel Emissions and the ...

Numerical soln. of diff. eqns. (Calculus) 
JavaScript 
Tool 

[0]

Explore this model of the carbon cycle to investigate whether to buy a hybrid car or a regular gasfueled car. Change the parameters of the modeled system and examine the effects on the system in grap...
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Plate Tectonics and the Rock C...

Numerical soln. of diff. eqns. (Calculus) 
JavaScript 
Tool 

[0]

Change the parameters of this model of the earth's rock cycle to find out how the crust formed, what is currently happening to it, and what could happen in the future.
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The Carbon Cycle

Numerical soln. of diff. eqns. (Calculus) 
JavaScript 
Tool 

[0]

Explore the results of varying carbon stocks and fuel emissions on the carbon cycle in this simulation. Results are displayed in graphs with the option of tables.
More: lessons, discussions, ratings, reviews,...

Euclid's Elements, Book II, Pr...

Obtuse (Geometry) 
Java Applet 
Tool 

[0]

Euclid's proposition states properties about the sides and angles of obtuse triangles. The guide then examines the structure of the proposition. To reset the applet, press "r" while your cursor is ov...
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