TeachEngineering
Teach Engineering: Insulation Materials Investigation
Students test the insulation properties of different materials by timing how long it takes ice cubes to melt in the presence of various insulating materials. Students learn about the role that thermal insulation materials can play in...
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Warmair.com: Attic Insulation Calculator
An online JavaScript application which allows visitors to investigate the relative amount of heat being lost from their homes due to insufficient insulation. The current R-value and a hypothetical R-value can be entered and the energy...
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Warmair.com: Insulation
The role of insulation in preventing heat loss is discussed. The concept of thermal resistance is introduced and explained. Understandable language but no graphics.
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Correlation Coefficients
This page provides a good discussion of correlation coefficients (r,) which indicate the "strength of the linear association between variables." Includes formulas and scatter plots. Some prior knowledge of statistics might be helpful.