For one thing, you have to take a lot of care with assumptions about background knowledge and culture- I live in a country with no public transport, so lessons about how to use the London Underground can be confusing and difficult. When such lessons are used to teach grammatical points, it can fail to make things clear. An IELTS question about gap year activities completely threw students here, as the concept was completely new to most of them. My Khmer teacher asked me the other day what the white stuff in her sandwich was (mayonnaise), which served to remind me of the considerable cultural differences there are.
- For Teachers