Final answer:
To build Lewis dot structures for methane, draw a central carbon atom bonded to four hydrogen atoms.
Step-by-step explanation:
The first step in building Lewis dot structures for methane is to draw the Lewis structure of the molecule. Methane (CH4) consists of a central carbon atom bonded to four hydrogen atoms. To represent this, you would draw a carbon atom in the center with four lines extending outwards, each ending with a hydrogen atom.