Essential things to remember from today's class (class 5, 5th September)

If you want an acceptable grade, do what the labs require.
   Be sensible about things. For this new lab, you need to write a function
   that draws a star. Make it easy for you to use, make the computer do all
   the hard work, that's its job. A function that draws a row of six stars
   should just draw a star (a single function call), move a bit (a single
   function call), and repeat that five more times.

Be sure you could re-create the graph plotting example without having to
   refer to that example. By re-create I mean create functions that do the
   same thing in a similar way without getting ugly and complicated. I do
   not mean reproduce verbatim.