A catechism is a summary or exposition of doctrine and serves as a learning introduction to the Sacraments traditionally used in catechesis, or Christian religious teaching of children and adult conve
Codex Manesse, fol. 292v, "The Schoolmaster of Esslingen" (Der Schulmeister von Eßlingen)
A catechism lesson in a Madras Presidency village (India), 1939
The Catechism Lesson by Jules-Alexis Muenier (1890), Museum of Fine Arts and Archeology of Besançon.
The Catechism, painting by Edith Hartry
The Didache, also known as The Lord's Teaching Through the Twelve Apostles to the Nations, is a brief, anonymous early Christian treatise written in Koine Greek, dated by modern scholars to the first
Catechism
…The Morals" of St. Basil of Caesarea, and the Enchiridion on Faith, Hope and Love by St. Augustine of Hippo. The earliest known catechism is the Didache, which was written between 60 and 85 AD. The word "catechism" for a manual for this instruction appeared in the Late Middle Ages. The question-and-answer…
Article about the rediscovery of the Didache, Chicago Daily Tribune, 1884
The title of the Didache in the manuscript discovered in 1873
Philotheos Bryennios, who re-discovered the Didache
Revelation 22:17 (KJV), to which the prayer in Didache 10 bears some similarity