does anyone know what movie this is?

It's called "One Ordinary Woman, One Extraordinary Journey."

"One Ordinary Woman, One Extraordinary Journey" is a unique and compelling documentary about the heart and sheer determination of a single mother, Carrie Ponder, who overcame, poverty, spousal abuse, homelessness and gang violence to successfully raise eight children in the tough inner city of Chicago and guide each of them to the best educational institutions in America. Her stunning, and at times humorous, story is told through the words of her children, friends, admirers and Mother Ponder, herself, as they all come to grips with Carrie's final debilitating battle with lung cancer. It is the ultimate story of triumph and love; a reality tale of one woman's philosophy about life and her dedication to her family and community.

Terms of Endearment is a movie about a woman with cancer but she only has 2 children. It was pretty good.....maybe that is what you are looking for.

One Ordinary Woman, One Extraordinary Journey

http://imdb.com/title/tt0466567/plotsummary

cheers

I think it might be the movie called Stepmom. She has a lot of kids and she gets cancer and she dies. I think that might be the movie you are looking for