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Topic (Course) 
Technology 
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Fish Farm Problem

Ratios (Math 4) 
Java Applet 
Activity 

[1]

Depending on the student's approach to this problem, many types of math can be incorporated to solve this problem. The concept of ratio is used throughout, and students can solve the problem by experi...
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Galactic Exchange Problem

Ratio and proportion (Math 4) 
Java Applet 
Activity 

[0]

This problem allows students to investigate ratio and proportion, by discovering the exchange rate between different alien currencies (i.e. 7 circles have the same value as 3 triangles, etc.) By manip...
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Leonardo da Vinci Activity

Ratio and proportion (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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Balance Applet Teacher Introdu...

Ratio and proportion (Math 4) 

Lesson Plan 

[0]

The Balance Applet is a game. There is a balance and 3 different shapes. The weight of one shape is given. The player is asked to find the other shapes' weights using the balance.
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Fish Farm Teacher Support

Ratios (Math 4) 
Java Applet 
Lesson Plan 

[0]

Links to Standards, activities, lessons, other resources.
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Galactic Exchange Teacher Reso...

Ratio and proportion (Math 4) 
Java Applet 
Lesson Plan 

[0]

Links to Standards, activities, lessons, Ask Dr. Math archives, vocabulary, other resources.
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Leonardo da Vinci Lesson Plan

Ratio and proportion (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.
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Single Runner

Rates (Math 4) 
Java Applet 
Lesson Plan 

[0]

While moving a runner along a line, changing the step size and starting position, the students will identify and describe situations with constant rates of change and compare them.
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Two Runners

Rates (Math 4) 
Java Applet 
Lesson Plan 

[2]

While moving runners along a line, and changing their step size and starting position, the students will identify and describe situations with constant rates of change and compare them.
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Lifting a Lion, TI15

Ratio and proportion (Math 4) 
TI15 
Lesson Plan 

[0]

An activity designed to take advantage of the features of the TI15 calculator. Using a toy lion and a lever, students will discover how much work is needed to raise the toy lion. They will use propor...
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Percentage Proportion Problems...

Proportions (Math 4) 
JavaScript 
Story 

[0]

Jeff LeMieux, writes about how he uses the Perl Script, Percentage Proportion Problems generator.
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Solving Proportions  Story

Proportions (Math 4) 
JavaScript 
Story 

[0]

Jeff LeMieux, writes about how he uses the Javascript page, Solving Proportions.
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How fast can you run?

Rates (Math 4) 
Excel 
Tool 

[1]

Students determine how fast they can run in ft/s, mi/hr, m/s, and km/hr.
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Ratio and Proportion

Ratio and proportion (Math 4) 
Flash 
Tool 

[1]

This module's aim is to remind learners about simple ratio and direct proportion, using factsheets, worksheets, an activity, a game, and a quiz at multiple difficulty levels.
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Thinking Blocks  Ratio Word P...

Ratios (Math 4)+ 
Flash 
Tool 

[6]

Thinking Blocks teaches students in grades 4  6 how to model and solve multistep word problems dealing with ratio and proportion. Using brightly colored blocks, students model the relationships among...
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Balance Applet

Ratio and proportion (Math 4) 
Java Applet 
Tool 

[0]

The weight of one of three shapes is shown in a box below that shape. Try to figure out the weight of the other two objects by using the balance.
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Fish Farm I

Ratios (Math 4) 
Java Applet 
Tool 

[1]

Students try to place male and female fish in different ponds such as to satisfy certain restrictions on the ratios of male to female fish.
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Galactic Exchange

Ratio and proportion (Math 4) 
Java Applet 
Tool 

[4]

Students are asked to discover the exchange rates among different types of alien currency, and use this information to find out the amount of money needed to "buy" certain types of food.
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Integer Bars

Ratio and proportion (Math 4) 
Java Applet 
Tool 

[0]

Compare, rotate, and combine Integer Bars, which come
in different colors and lengths  from 1 unit to
10 units.
NOTE: Jill Britton discovered that a zipped version of this applet by J...
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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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Proportion Solver

Proportions (Math 4) 
JavaScript 
Tool 

[1]

A JavaScript which demonstrates solving proportions using the proportion equation.
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GeomeTwee

Ratio and proportion (Math 4) 
iPad 
Tool 

[0]

This is the junior version of GeomeTree. It enables the manipulation of geometric trees with two or three branches. Change angle between branches and change common ratio. Selectable themes draw ...
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Galactic Exchange II

Ratio and proportion (Math 4) 
Java Applet 
Technology PoW 

[3]

By using the vending machine (Java applet) to buy food, determine the relative values of the coins.
NOTE: A free login is required. Sign up using the link on the login page, or use...
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Intercambio Galáctico II

Ratio and proportion (Math 4) 
Java Applet 
Technology PoW 

[0]

Determine el valor relativo del dinero en el Planeta Naranja.
versión en inglés
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Tangrams

Ratio and proportion (Math 4) 
Java Applet 
Technology PoW 

[1]

Use an interactive applet to discover some of the relationships among the pieces in a set of Tangrams.
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