Pakistani teenager Malala Yousafzai, who was severely wounded in a Taliban attack in October 2012, received a warm welcome during her visit to Syrian refugees living in Amman.
More than 140,000 people have died in almost three years of conflict in Syria.
The UN estimates that more than 650,000 Syrian refugees are in Jordan and that number is expected to increase significantly this year.
"My message to the world is that they should take it serious, and they should never remain silent, because these children need our help. If we forget them, and if we say that they are far away, it wouldn't affect us, so it's not true, because if we don't stop war, it will spread. If we don't stop terrorism, it will spread, and it can affect every person in this world," she said during her visit to the Zaatari camp.
She also stressed on the importance of education for this generation of Syrians.
UNHCR says Syrian children are suffering considerably in the war. They are growing up in fractured families, missing out on education as they turn to manual labor, sometimes under dangerous or exploitative conditions.
There are UN-run schools at the Zaatari camp in Jordan, as well as recreational facilities, like football fields and playgrounds with swings. But children say they are discouraged from going to school because they have already missed out on education for months and face long walks to reach the locations.