Hanukkah, the Festival of Lights, The reason for the celebration is twofold the miraculous military victory of the small, ill-equipped Jewish army over the ruling Greek Syrians, who had banned the Jewish religion and desecrated the Temple; and the miracle of the small cruse of consecrated oil, which burned for eight days in the Temple's menorah instead of just one.
Hanukkah is celebrated by:
* lighting a menorah for eight nights with olive oil or wax candles; one on the first night and an additional one each succeeding night, so that the last night has eight lights
* eating food fried in oil, especially potato pancakes (latkes) and jelly doughnuts (sufganiyot)
* playing with a dreidel, a four-sided top; the player wins or loses money depending on which side it lands on (each is marked with a different Hebrew letter)
( some information found on Answer.com)