A fun way to start teaching Ethics in ToK. Students are given index cards that have the names of various ethically controversial behaviour on them, for example arranged marriages, cloning, homosexuality etc. Students work in groups to place the cards in one of 3 categories - behaviour that is so offensive, it should be prohibited, behaviour that they feel is perhaps is unethical but should be tolerated, and behaviour that is acceptable and should be respected. When the groups are done with their