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Topic (Course) 
Technology 
Type 
$? 
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9 digits

Addition (Math 2) 
Android 
Tool 

[0]

This is a puzzle with 9! possibilities and 336 solutions. The problem posed in 9 digits consists in the organization of the numbers 1 to 9 in a square of 3 * 3 to make the sum of the numbers of the fi...
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Math Cruncher

Addition (Math 2)+ 
Android 
Tool 

[0]

Features of Math Cruncher include,
* solving simple equations before they hit the ground
* solving the bonus equations to help yourself survive in the game and reach the highest score.
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Math Garden

Addition (Math 2)+ 
Android 
Tool 

[0]

In this app, the natural numbers are represented as plants:
If two unseeded seeds overlap, they add up.
If two seeds are planted, the plants multiply.
The plants are structured in branc...
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Math Tablet

Operations with numbers (Math 2)+ 
Android 
Tool 
$ 
[1]

This is a virtual manipulative to support developing number sense and arithmetic concepts. Two subquantities together result in a new total quantity. This is called addition. And if you take away a s...
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Ninedigits workshop

Addition (Math 2) 
Android 
Tool 
$ 
[0]

Puzzle with 9! possibilities and 336 solutions. The problem posed in Ninedigits workshops consists in the organization of the numbers 1 to 9 in a square of 3 * 3 to make the sum of the numbers of the...
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Touch Integers ℤ (+  × ...

Operations with numbers (Math 2) 
Android 
Tool 

[0]

The fundamental theorem of arithmetic, also known as the unique factorization theorem or the uniqueprimefactorization theorem, states that every integer greater than 1 either is prime itself or is t...
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Touch decimals Place value ±

Addition (Math 2)+ 
Android 
Tool 

[1]

This touch decimal app has a double interactive place value chart, with up to 40 decimal columns. It is a mathematical analogy with positive and negative tokens. It is designed to:

Whole Calculator

Addition (Math 2)+ 
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.
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Two Less Than  PDA version

Mental math (Math 2) 
Calculator 
Tool 

[2]

Select the number that is "two less than" the highlighted number.
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2nd grade math worksheets

Operations with numbers (Math 2)+ 
Computer 
Activity 

[0]

This site contains 2nd grade math worksheets and lessons free of charge. Most of the 2nd grade math topics are separated in the different sections of the site.
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Balancing

Addition (Math 2)+ 
Computer 
Lesson Plan 

[0]

This lesson encourages students to explore another model of subtraction, the balance. This model leads naturally to recording with equations. Students use actual and virtual pan balances in their expl...
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Develop Strategies for Mental ...

Mental math (Math 2) 
Computer 
Tool 

[0]

Mental math lessons and practice. Covers "compatible numbers", estimating, the Distributive Property, and finding patterns.
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Distances from London

Rounding (Math 2) 
Computer 
Tool 
$ 
[0]

Alterable worksheet in which students round distances of various cities from London to the nearest 10, 100, and 1000. Fee required to print; see this page.
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Estimating Whole Numbers and D...

Estimation (Math 2) 
Computer 
Tool 
$ 
[0]

Alterable worksheet allows students to estimate the location of points on unmarked number lines, on the intervals [0, 50] and [0, 100]. Fee required to print: see this page.
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Estimating Whole Numbers and D...

Estimation (Math 2) 
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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Fact Families

Operations with numbers (Math 2) 
Computer 
Lesson Plan 

[0]

In this lesson, the relationship of addition to subtraction is explored with books and with connecting cubes. Students search for related addition and subtraction facts for a given number using a virt...
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Finding the Balance

Operations with numbers (Math 2) 
Computer 
Lesson Plan 

[1]

This lesson encourages students to explore another model of subtraction, the balance. Students will use real and virtual balances. Students also explore recording the modeled subtraction facts in equa...
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Grouping and Grazing

Addition (Math 2)+ 
Computer 
Tool 

[1]

Help the alien spaceship move cows into corrals by counting, adding, and subtracting. This activity helps children learn grouping, tally marks, and place value. As they master counting, they can move ...
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How Many Under the Shell?

Addition (Math 2)+ 
Computer 
Tool 

[0]

After Okta hides some bubbles under a shell, he then either adds more bubbles or takes some away. Students determine how many bubbles are left under the shell.
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Markplication

Multiplication (Math 2) 
Computer 
Tool 

[0]

The user trains multiplication skills. Homer Simpson inspires the user to learn multiplication. Game runs in two modes. In case of wrong answer it displays the right one. Game is time limited.
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Mental Math

Mental math (Math 2) 
Computer 
Lesson Plan 

[7]

Mental math teaching strategy for capturing the attention of a class. Provides game suggestions and problem examples.
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Mental Math Techniques

Mental math (Math 2) 
Computer 
Support Material 

[1]

Mental math techniques:
 Counting on and back
 Break apart
 Equal additions
 Compensation
 Compatible numbers
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Number Sequences: I

Whole numbers (Math 2) 
Computer 
Tool 
$ 
[0]

Alterable worksheet in which students fill in missing numbers in sequences, counting backwards and forwards in 2's, 3's, 4's, and 5's. Fee required to print; see this page.
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Number Sequences: II

Addition (Math 2)+ 
Computer 
Tool 
$ 
[0]

Alterable worksheet in which students fill in the missing numbers in sequences, counting backwards and forwards in 6's, 7's, 8's, 9's, 10's, and 11's. Fee required to print; see this page.
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Patterns on Charts

Multiplication (Math 2) 
Computer 
Lesson Plan 

[0]

Students find, record, and analyze patterns on hundred and multiplication charts. They also use an online calculator to generate patterns and then record them on a chart.
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