text: of uh people to teach math and sciences and somebody said well you know you could go in and and substitute teach at seventy five dollars a day and there 's always going to be you know uh somebody having a need for a math or science teacher i thought Christ they 're letting me in to you know this would be this would be frightening i don 't know anything about it
  
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  There 's always a need for math teacher substitutes .