For my output device I wanted to make a device that will produce hot air to draw which I will be able to use for my final project. I couldn't find anything related to temperature in Neil's output examples so I started looking into Arduino examples. Finally I found this very helpful website :
Apparently the flow of electricity seems to be somehow related to heat. "Resistors b> are electrical components designed to have a specific resistance. When attached to a battery, resistors will dissipate some of the energy they receive as heat."
After talking to Anthony I decide to use Neil's mosfet example for both my heater and my fan that would produce air.
With Anthony's advice I combined the mosfet board and the thermistor board but I had to make a two layer board.
Unfortunately my board got overheated!!!! I have to change the mosfets!