Continuity mistake: Just as Precious is running out of the deli with her stolen bucket of chicken, you can see that she has left her new journal and pen on the counter. Later, in her first day of school, she has the journal.
Continuity mistake: In Precious, the scene where Mary, Mrs. Weiss and Precious are discussing being reunited Mary's red lipstick is on in one shot, off in the next.
Continuity mistake: When Precious is in the Principal's office, the knot on her scarf changes in the close-ups.
Continuity mistake: Mongo throws the tin foil plate to the floor, but after that it keeps appearing and disappearing randomly on the table.
