However, in this case, the lesson appears to have backfired with both children and parents taking offence.
"He made a mockery out of slavery," one mother, Precious Tross, said. Her child was upset by the class.
"My daughter was looking to the floor. She should not have experienced something like that," a tearful Tross added.
"That is a mockery. That is disrespectful.
"You do not put our kids in any situation like that when you know our history. That hurts me to the core.
"I don't have a problem with you teaching our kids about slavery and what our ancestors went through and how they had to pick cotton.
"Our teachers back in the day told us that, but they don't bring in cotton and make you pick cotton seeds out of cotton."
The Rochester City School District said the teacher had been put on administrative leave. It declined to say whether it was paid or unpaid.
Rausch was unavailable for comment.