======Developing Powerful Ideas about Thermal Phenomena======

**Powerful Idea:**\\
  * If equal amounts of hot and cold water, equilibrium T is half way between.\\
  * If have a lot of hot water, the equilibrium T is close to but less than initial hot T.\\

  * If have a lot of cold water, the equilibrium T is close to but more than initial cold T.\\



**Powerful Idea:**\\
  * The bigger amount of water will have the smaller change in T (small change in temperature) for (lots of stuff)\\

  * The smaller amount of water will have the bigger change in T (big change in temperature) for (not much stuff)