On Mondays, Wednesdays and Thursdays, 12-year-old Abigail Appetey is forced to miss her classes at primary school to sell fried fish door-to-door in Apimsu, her farming village in eastern Ghana. She gets up at 5am to buy the fish three miles away.
The little she earns won't go on the exercise books she needs; her parents will spend it on her 20-year-old brother Joseph's education. Abigail wants to be a teacher, she says, but is always tired in class.
There are 41 million girls around the world who should be in primary school all week, but aren't, the Department for International Development says. At least 20 million of them are, like Abigail, in sub-Saharan Africa.