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Resource Name 
Topic (Course) 
Technology 
Type 
$? 
Rating 

Type 1 and Type 2 Errors

Tests of Significance (Probability & Statistics)+ 
Java Applet 
Tool 

[1]

This applet demonstrates Type I and Type II errors, as well as the power of the test, in onesided hypothesis testing.
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Types of Angle  Math Open Ref...

Angles (Geometry) 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate various classes of angle: acute, right, obtuse, straight, reflex and full.
The applet presents an angle (initially acut...
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Types of Angles

Angles (Geometry) 
Java Applet 
Tool 

[1]

Gives definitions of acute, obtuse, and right angles along with an applet that demonstrates the different types of angles. In addition there is an applet that tests understanding of acute vs. obtuse ...
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Types of Functions (Algebra I)

Functions / Relations (Algebra) 
Flash 
Support Material 

[0]

This minilesson covers onetoone matching of functions, showing graphical and tabular representation of one to one mapping and many to one mapping.
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Types of Triangles

Classify geometric objects (Math 3)+ 
Java Applet 
Activity 

[2]

This activity is available in Word, PDF, or HTML format and at two different levels (an introduction to types of triangles, and a more advanced version). Students use a GSP sketch or interactive web ...
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Types of Triangles

Classify geometric objects (Math 3)+ 
Java Applet 
Tool 

[4]

This JavaSketchpad applet accompanies the tPoW, Types of Triangles. Students are able to drag and manipulate four triangles and by noticing what happens they classify the triangles as either scalene, ...
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Types of Triangles

Classify geometric objects (Math 3)+ 
Sketchpad 
Tool 

[0]

This Sketchpad sketch accompanies the tPoW, Types of Triangles. Students are able to drag and manipulate four triangles and by noticing what happens they classify the triangles as either scalene, isos...
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Types of Triangles

Classify geometric objects (Math 3)+ 
Sketchpad 
Technology PoW 

[3]

Students use a GSP sketch or an interactive web page to drag and manipulate four triangles. They identify one of each type: scalene, isosceles, equilateral, and right.
NOTE: A free...
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Types of Triangles (Acute, Obt...

Triangles (Geometry)+ 
Java Applet 
Tool 

[0]

An interactive applet and associated web page that demonstrate the three types of triangle: acute, obtuse and right.
The applet shows a triangle that is initially acute (all angles less t...
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Uncovering Math with Manipulat...

General (Kindergarten)+ 
TI10 
Activity 

[0]

The activities for the TI10, designed for primary grades, build connections between physical representations and the mathematical symbolism of the calculator. Each activity consists of Teacher Pag...
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Uncovering Math with Manipulat...

General (Kindergarten)+ 
TI10 
Activity 

[1]

Designed for intermediate grades, the activities for the TI10 and the TI15 Explorer use the calculator as a datagenerating device to support exploration of mathematical ideas. Each activity cons...
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Uncovering Math with Manipulat...

General (Math 1)+ 
TI15 
Activity 

[1]

Designed for intermediate grades, the activities for the TI10 and the TI15 Explorer use the calculator as a datagenerating device to support exploration of mathematical ideas. Each activity cons...
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Undecagon  Math Open Referenc...

Polygons (Geometry) 
Java Applet 
Tool 

[0]

The applet shows an undecagon where the user can drag any vertex to reshape it.
User can see that the interior and exterior angles are constant in a regular undecagon, but vary in an irregular ver...
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Understanding Algebraic Factor...

Factor (Math 6)+ 
Java Applet 
Lesson Plan 

[0]

Students use algebra tiles to explore algebraic factoring.
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Understanding Averages

Data collection (Math 7)+ 
Flash 
Tool 

[0]

The aim of the Understanding Averages topic area is to introduce learners to averages, calculating the mean and finding the range. Linked resources include factsheets, games, quizzes, and worksheets. ...
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Understanding Distance, Speed,...

Rates (Math 4)+ 
Java Applet 
Tool 

[72]

In this activity, students investigate how changing starting position and step size affect the graph of time versus distance.
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Understanding Experimental Pro...

Certain, likely, impossible (Math 4)+ 
Java Applet 
Tool 

[0]

Experiment with experimental probability using a fixed size section spinner, a variable section spinner, 2 regular 6sided number cubes or design your own number cubes. Appropriate for elementary grad...
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Understanding Factoring throug...

Factor (Math 6)+ 
Java Applet 
Lesson Plan 

[0]

Understanding factoring through geometry: students work cooperatively to display a numeral as the area of a rectangle, and make as many rectangular arrangements as possible for each numeral given.
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Understanding Place Value

Place value (Math 4)+ 
Java Applet 
Tool 

[0]

Users are presented with three colors of paint and each dispenser is marked with 1 gal, 10 gal, 100 gal, and 1000 gal amounts to be dispensed. The task given is to dispense a certain number of gallons...
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Understanding Ratios of Areas ...

Ratios (Math 5)+ 
Java Applet 
Tool 

[0]

Users are given an opportunity to explore an interesting quantitative relationship between the area of a polygon and the area of an inscribed figure formed by joining the midpoints of the adjacent sid...
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Understanding Sequence and Ser...

Arithmetic sequences and series (Algebra II)+ 
Flash 
Support Material 

[0]

This minilesson explains basic terminology associated with sequences, as well as the basics of arithmetic and geometric sequences.
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Understanding Summation Notati...

Arithmetic sequences and series (Algebra II)+ 
Java Applet 
Tool 

[0]

Students are given 10 problems written in summation notation. When they click, the sequence that comes from "translating" the notation is revealed. Very short exercise.
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Understanding the Least Square...

Line of Best Fit (Algebra)+ 
Java Applet 
Tool 

[2]

This tool allows users to explore three methods for measuring how well a linear model fits a set of data points.
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Unexpected Answers

Pictographs (Math 7)+ 
Java Applet 
Lesson Plan 

[0]

Considers probability problems with unexpected and surprising answers.
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Unit 5: Probability Activities...

Probability (Probability & Statistics) 
Computer 
Activity 

[0]

Eleven activities for the classroom, working with probability at the UK's GCSE level (US high school).
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