Probably the most significant observance related to Pesach involves the removal of chametz from Jewish homes. This commemorates the fact that the Jews leaving Egypt were in a hurry, and did not have time to let their bread rise. Observant Jews will not eat leavened bread for the duration of the holiday; instead they eat unleavened bread, known as Matzah.
On the first night of Pesach Jews have a special family meal filled with ritual to remind them of the significance of the holiday. This meal is called a seder which is the Hebrew for ‘order'. This is because the exodus from Egypt must be discussed in a particular order, which is set out in a special book called the Haggadah.