What are the reasons mama is considered a radical teacher in roll of tunder hear me cry?

Mama in "Roll of Thunder, Hear My Cry" is considered a radical teacher because she not only educates her children at home to ensure they receive a quality education but also teaches them about their history, culture, and how to navigate the racism they face in society. She challenges the status quo by instilling pride in her children and encouraging them to stand up for themselves and their rights, despite the risks involved.