All periods, do page 81, 28A.

Periods 2-4, go to the red button ("Info. Pro.") and start assignment #24.

Periods 5 & 6, after finishing the timed typing, go to the red button ("Info. Pro.") and do assignment #17 in Excel.  That is, research "towered general aviation airports in Los Angeles County" and put the same data as I did in an Excel spreadsheet.