Our Take A Number series is exploring problems around the world through the lens of a single number. Today's number is 81, which is how many French schools a journalist visited to teach kids about disinformation on the Internet.
As the bell rings, students file into class at Maxence Van der Meersch middle school. This morning the kids have a visitor — investigative journalist Thomas Huchon.
Without telling them the topic of his visit, Huchon says he's going to show them a mini-documentary.