What is a seder?
Passover Seder
The most famous question which the youngest child asks at the Seder is the "Ma Nishtana"—'Why is this night different from all other nights?' After the asking of this questions, the main portion of the Seder, Magid, discusses the answers in the form of a historical review. Also, at different points in the Seder, the leader of the Seder will cover the matzot and lift their cup of wine; then put down the cup of wine and uncover the matzot—all to elicit questions from the children.[13]