Anchor your thumb on a pick-up and play the open third string with your right hand index finger (I). You are playing an A note using what is called the single stroke technique.
The notes you are playing are called quarter notes (c). There are four quarter notes in each bar of * time.
Repeat the above exercise using your right hand middle finger.
The next three examples use the right hand single stroke technique on the three remaining open strings. You can use either your index or middle finger.