This PowerPoint is full of images of black hairstyles from the 1800s through present day. There is very little writing on the slides to allow students to really discuss the style changes.
I used this PowerPoint during a unit on A Raisin in the Sun to help students see what a big deal it was for Beneatha to chop her hair off. Additionally, it was an amazing way to celebrate African American hair. I have also used it to teach Their Eyes Were Watching God because Janie's hair is an especially poignant symbol int the novel.
The emphasis of this presentation is really to show that African Americans have historically been expected to have hairstyles just like people with fine, straight hair, and that while the 70s, 80s and 90s especially celebrated black hair's potential, modern black celebrities and even the Obama women have traditional, "white" hairstyles.
This presentation is always very popular with my African-American students, many of whom have told me that it's cool that they get to be the focus in a positive way for a lecture on history and style. They will all recommend you watch the Chris Rock documentary- unfortunately it's definitely NSFW! However, I teach in a very diverse community, and this presentation is popular among all groups of kids and really helps them understand why hair is such a symbol of power, repression, and independence within the black community.