This is just one of many possible solutions:
when green flag clicked
clear
go to x: (0) y: (0)
pen down
move (100) steps
turn cw (72) degrees
wait (1) secs
move (100) steps
turn cw (72) degrees
wait (1) secs
move (100) steps
turn cw (72) degrees
wait (1) secs
move (100) steps
turn cw (72) degrees
wait (1) secs
move (100) steps
turn cw (72) degrees
wait (1) secs
pen up