Got thinking of this because of an I Love Charts post: [url]http://ilovecharts.tumblr.com/post/33298830817[/url][br][br]That had a nice follow up from Shawn Cornally:[url] http://shawncornally.com/wordpress/?p=2997[/url][br][br]I had been making my own set: [url]http://mathhombre.tumblr.com/post/33397964130/scale-y[/url][br]And that was the start of this sketch. Basically I couldn't stop myself.[br][br]I made a quick activity sheet to go with this: [url]http://mathhombre.blogspot.com/2012/10/3rd-degree.html[/url][br][br]Set the slider on the bottom right to choose your input in Kelvin, Farenheit or Celsius, then adjust temperature using that point. (The little triangle.)[br][br]What do you notice as you change the temperature?