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Topic (Course) 
Technology 
Type 
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Law of Sines  Math Open Refer...

Law of sines (Geometry) 
Flash 
Tool 

[0]

A web page and interactive applet demonstrating the Law of Sines.
The applet shows a triangle with draggable vertices.
As you drag them, the "Law of Sines" ratio is continually recal...
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Law of Sines Ambiguous Case

Ambiguous Case (Trigonometry) 
Sketchpad 
Activity 

[1]

Use a Geometer's Sketchpad file to investigate the ambiguous case of the law of sines.
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Law of Sines Ambiguous Case

Ambiguous Case (Trigonometry) 
Sketchpad 
Tool 

[1]

Use a Geometer's Sketchpad file to investigate the ambiguous case of the law of sines.
More: lessons, discussions, ratings, reviews,...

Law of Sines, Ambiguous Case

Ambiguous Case (Trigonometry) 
Flash 
Tool 

[0]

Flashbased introduction to the case in which the Law of Sines yields two solutions. College Cram charges access fees by the month or by the semester for most resources. To get a preview of their ...
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Leapfrog

Algebra and expressions (Math 5)+ 
Flash 
Tool 

[0]

Slide and jump the frogs to move each group to the opposite side. Can you find a pattern to get them there in the smallest number of moves? Can you predict how many moves it will take different number...
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Learn Trig...The Easy Way

Right Triangles (Geometry)+ 
Java Applet 
Tool 

[3]

Introduction
You know how to find the length of the third side of a right triangle when the lengths of the two other sides were given, but how does a person determine the length of a side if t...
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Learn the Game

Least common multiple (Math 7)+ 
Java Applet 
Lesson Plan 

[1]

In the following lessons of this unit, students will have an opportunity to fully explore the patterns that result from the Paper Pool game. In this lesson, however, students will only spend time lear...
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Learning About Multiplication ...

Multiplication (Math 5)+ 
Java Applet 
Tool 

[0]

Using an interactive figure, the user investigates what happens to the area of a rectangle with fixed width if the height is changed.
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Learning about Number Relation...

Counting (Kindergarten)+ 
Computer 
Tool 

[0]

Students can find and create up to four number patterns in this twopart eexample by using a calculator or by shading in values in rectangular grids up to a value of 100.
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Learning to Reason

Logic and set theory (Math 7)+ 
Flash 
Tool 

[0]

The author states, "When we reason within a logical framework, words must be manipulated according to the rules of the game...." Her site offers an opportunity to learn about the terms not, ...
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Least Common Multiple

Least common multiple (Math 4)+ 
JavaScript 
Tool 

[0]

The user learns about least common multiples and how to find them. After viewing examples, users can interactively practice finding the least common multiple of two numbers.
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Least Squares

Function graphs (Calculus) 
Java Applet 
Tool 

[0]

Enter a list of data points and see polynomials fit to the data using a leastsquares fit.
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Least Squares Circle

LeastSquares Regression (Probability & Statistics)+ 
Java Applet 
Tool 

[4]

This applet produces a least squares fit of an equation of a circle to a set of data points which you generate by clicking the mouse at selected points in the drawing canvas.
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Lecky Compares

Patterns and sequences (PreKindergarten)+ 
Flash 
Tool 

[1]

Help Lecky the Alien choose the biggest, smallest, widest, or narrowest object or animal, then help Lecky arrange them in size order.
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Length of a Line Segment

Distanceratetime (Math 7)+ 
Flash 
Tool 

[0]

A Flash introduction to finding the length of a line segment given the coordinates of its endpoints. College Cram charges access fees by the month or by the semester for most resources. To get a p...
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Length, Perimeter, and Area

Measurement (Math 7)+ 
Java Applet 
Lesson Plan 

[0]

Introduces length, perimeter, and area
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Length, Weight and Capacity

Length/height (Math 3)+ 
Flash 
Tool 

[0]

This module covers measurement and comparison of length, weight, and capacity, using factsheets, worksheets, a game, and a quiz at three levels of difficulty.
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Leonardo da Vinci Activity

Algebra (Math 4)+ 
Java Applet 
Activity 

[0]

Students answer the question: Is the ratio of our arm span to our height really equal to 1? If an emphasis is given to a/h = 1, this can be an engaging activity using variables. Use a spreadsheet to w...
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Leonardo da Vinci Lesson Plan

Algebra (Math 4)+ 
Java Applet 
Lesson Plan 

[2]

Question: Is the ratio of our arm span to our height really equal to 1? If an emphasis is given to a/h = 1, this can be an engaging activity using variables. Use a spreadsheet to work with the data.
More: lessons, discussions, ratings, reviews,...

Leonardo da Vinci's Proof

Pythagorean theorem (Math 7)+ 
Sketchpad 
Activity 

[0]

Students use reflection and rotation to build a sketch that demonstrates a famous proof by Leonardo. The link to the activity itself is to a zip file that contains both the activity in pdf format ...
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Leonardo da Vinci's Proof

Pythagorean theorem (Math 7)+ 
Sketchpad 
Tool 

[0]

Students use reflection and rotation to build a sketch that demonstrates a famous proof by Leonardo. The link to the tool itself is to a zip file that contains both the sample sketch (designed to ...
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Less or Greater

Ordering numbers (Math 1)+ 
Flash 
Tool 

[0]

Choose the symbol that describes the comparison of two numbers: less, equal, or greater.
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Let's Compare

Data analysis (Math 3)+ 
Java Applet 
Lesson Plan 

[0]

In this lesson, students will collect numerical data, generate graphs, and compare two data sets. They will also find the mean, mode, median, and range of the data sets. Communication and problem solv...
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Let's Count

Addition (PreKindergarten)+ 
JavaScript 
Tool 

[3]

This site features counting activities with the numbers from one to ten. The activities give preK to grade 1 students practice in counting, using both symbols and names of the numbers. In the activiti...
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Let's Count!

Counting (PreKindergarten)+ 
Flash 
Tool 

[0]

Click on the numbers and count the animals that are displayed.
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