1. The document discusses additional influences on curriculum, including textbooks, innovative instructional approaches, and state content standards.
2. It notes that while textbooks are seen as a national curriculum, teachers have flexibility in how they deliver content and can use technology like interactive textbooks or e-books.
3. The document also introduces interdisciplinary curriculum as a way to integrate multiple subjects around a central theme, giving teachers options for meeting different content standards in an engaging way for students.