A Holocaust survivor in Tulsa and others trained teachers on how to better teach students about what happened.

State lawmakers passed a bill last year, requiring Holocaust education for every Oklahoma student in grades six through 12.

Organizers said the goal of this conference is to make sure teachers are comfortable and empowered with the education they need for Oklahoma students to know about such an important part of world history.

90-year-old holocaust Survivor, Eva Unterman, shared her horrifying experience with Green Country teachers on June 16.

“Their reaction is often, ‘How could that have been?’” said Unterman. “I can see it in the expression because the story is so bizarre that people did this to one another.”

At a conference called "The World Must Know," held at the Jewish Federation of Tulsa, dozens of middle and high school teachers learned how to include Holocaust education in their classrooms.

"I want them to understand they can make a difference,” said Ursula "Uschi" Mueller, a retired educator from Tulsa. “I want them to learn to think for themselves, to look at true facts."

Charlotte Schuman is Jewish and the chairperson of the committee that helped organize the free conference.

"Understanding hate in today's world is probably the most important lesson that we can learn,” said Schuman. “Holocaust education is not just for the Jewish people."

State Senator Jo Anna Dossett from Tulsa co-authored the bill, requiring Holocaust curriculum.

"What we did with that bill was say, 'You can and you shall, here are the tools, now, let's go,'" said Dossett.

Participating educators get seven hours of professional development credit and the knowledge that could make a lasting impact on the young minds they teach.

“It all starts with words,” said Unterman. “I want them to know that words are important. Any insult toward any person because they’re perceived as being different is insulting, it’s wrong and un-American.”

Organizers said they plan to keep fundraising to make sure these conferences happen in the future and in even more locations, including smaller towns.