Councils #1: Council of Nicea, 325
The Council of Nicaea lasted two months and twelve days. Three hundred and eighteen bishops were present. Hosius, Bishop of Cordova, assisted as legate of Pope Sylvester. The Emperor Constantine was also present. To this council we owe the Nicene Creed, defining against Arius the true Divinity of the Son of God (homoousios), and the fixing of the date for keeping Easter (against the Quartodecimans).
All CatechismClass Lessons follow our time-tested 7 Step format: Introduction, Opening Prayers, Scripture and Commentary, Catechism Passages, Integration of the Lesson Topic, an activity, and a closing prayer. Quizzes end each of the lessons.