If you are going to explain how Perl lets you learn, why don't you show that in the form that beginning programmers should learn?

for my $i (0..9) {
  print $i;
}
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Less mechanics to remember, and no possible confusion over off by one errors. Or even in this case (depending on which way the example was going to develop) just:

print 0..9;
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Either of these is more convincing than writing Perl like a C refugee.