Easter is the most important festival in the Christian calendar. It is the commemoration of Jesus's death and his rising from the dead, also known as the resurrection. It comes at the end of Lent. The week leading up to it is called Holy Week.
Palm Sunday is the first day of Holy Week and celebrates Jesus' arrival in Jerusalem riding on a donkey. Crowds of people came out of the city to greet him, throwing down palm branches on the road. Many churches give out small crosses made from palm leaves, as a reminder of Jesus' entrance into Jerusalem and his death on the cross.
On Good Friday Christians remember when Jesus ate the Passover meal with his disciples, breaking bread and drinking wine, which is now known as the Last Supper. Since then this meal has been symbolically re-enacted by many Christians as a way of drawing closer to God. This is called the Eucharist or Holy Communion, which means 'thanksgiving'. It is a reminder that Jesus sacrificed his life for mankind and is also a part of many services throughout out the year.
The Bible tells us that, later that night, Jesus was betrayed by Judas Iscariot. After his arrest, Jesus was brought before the Jewish high priests who found him guilty of blasphemy because he called himself the Son of God. They handed him over to the Roman governor, Pontius Pilate.
As was the custom at the time of the Feast of Passover, Pilate gave the crowds the choice as to which of the two prisoners should be freed: Jesus, or Barrabas, a notorious criminal. Ironically, the the same crowd who had welcomed Jesus with palm branches a few days earlier now chose Barrabas to be released, and Pilate condemned Jesus to death by crucifixion.
On Good Friday, many churches hold services meditating on the events leading up to Christ's death: his interrogation, flogging, the mocking by the Roman soldiers, and his journey with the cross to Golgotha, the place of his death. Finally he was stripped naked and nailed to the cross, where he hung in agony for three hours, jeered at by the crowds, before he died. This is the day when people traditionally eat hot cross buns, because the cross on the bun is a reminder of the cross Jesus died on, and a reminder of the Christian belief that Jesus died to save us all.
Jesus was taken down from the Cross and laid in a Tomb to be made ready for death, this couldn't be done as The Sabbath had started and it would be another dau before Christ could be made ready for a burial.
Easter Sunday marks Jesus' resurrection. The Bible tells us that Mary Magdalene went to the tomb to make Jesus ready, followed later by some of Jesus' disciples. They discovered Jesus' body had gone and that the tomb was empty. Jesus then appeared to Mary and many of his disciples, speaking with them on separate occasions during the following forty days. As he left them for the last time, Jesus promised to send the Holy Spirit so the disciples would know God would never leave them. He then ascended into heaven. The Church celebrates this on Ascension day.