You may refer to the following links the Official Church Teachings regarding the Nature and Mission of the Church. This was supposed to be done through a group activity but given the time constraints, I am giving this to you for your reference.
Simply click on the links below. They will lead you to the Official Church teachings of the Catechism of Catholic Church:
- Nature and Mission Set 1
- Nature and Mission Set 2
- Nature and mission Set 3
- Marks of the Church (CFC)