Rwandan children often start playing football the moment they can walk. The 'ball' is sometimes a proper football, sometimes a tightly tied bundle of plastic bags wrapped in string, and sometimes just a rolled-up sock. Children play in school playgrounds, on village squares and on patches of flat ground between fields.
Because most of Rwanda is hilly, finding a proper flat pitch is sometimes a challenge. Some village pitches are slightly sloped - the goal at one end is uphill from the goal at the other end. Children just adapt: some teams call the uphill end 'the difficult goal' and the downhill end 'the easy goal', and they switch sides at half-time.
Rwanda's biggest football tournament is the league between teams from different cities and towns. The two best-known clubs are APR FC and Rayon Sports, both from Kigali. When they play each other, the stadium is full of fans wearing club colours and singing all afternoon.
The country has a brand-new national stadium called Amahoro Stadium, in Kigali, which can hold around 45,000 fans. 'Amahoro' is Kinyarwanda for 'peace' - a nice name for a stadium. Children sometimes go on school trips there, even when there is no match on, just to see the big green pitch from the seats.