At the moment, they're all sharing one room where they eat, sleep, study and play.
Life wasn't always like this though...
Farhad and his family are from Afghanistan.
There was a war there though, so he grew up in Iran.
“We lived in a big house. There was a room for me and my brothers. I had friends from Afghanistan in school.”
Two years ago, they had to flee again, making the dangerous journey from Iran to Serbia on foot, by car and on a smuggler's boat.
Sadly, Farhad and his family aren't the only people fleeing their homes.
someone in the world is forced to abandon their home because it's no longer safe for them to stay there.
migrants entered Serbia between January and August 2018.
Farhad's had an incredibly tough few years but, thanks to money raised by people like you, his future's looking brighter.
The project supported Farhad's learning with Serbian and English lessons, so he could continue his education and make new friends.
When the team realised Farhad had a love of and talent for art, they gave him some colouring pencils and paper, so he could start drawing again.
Along with other youngsters from the centre, Farhad’s been on picnics and day trips, where he can get some fresh air and work on his ball skills.
Farhad’s family have recently been given citizenship in Serbia and his drawings have been displayed at an art exhibition in Belgrade.
He’s still hoping for a new home and the chance to get back to school though.