Factoria, a student with moderate intellectual disability, is learning to read survival words. She is learning street signs (e.g., walk, don't walk, stop, etc.) and safety words (e.g., men's toilet, women's toilet, danger, poison, keep out, etc.). In what kind of curriculum is Factoria involved?
◦ Hidden curriculum
◦ Functional curriculum
◦ Expanded curriculum
◦ Null curriculum