To align with National Curriculum Framework (NCF 2005) guidelines, a social…

Concept — NCF 2005 treats knowledge as something a learner constructs by connecting school subjects with life outside the classroom. Curricular material is therefore positioned as one entry point among many — the local environment, the library, the media, field work and classroom discussion are equally legitimate sources — rather than as the fixed boundary of what may be known.

Application — Applied to a social science textbook, this means the book supplies starting points: sources to interrogate, questions to debate and activities that send the learner beyond the printed page. NCF 2005 and its social sciences position paper ask for enquiry-based material of exactly this kind, so the textbook primarily functions as a suggestive learning resource.

Contrast — how the other framings fall short:

• "Mandatory knowledge source" reverses the framework’s stance: NCF 2005 warns specifically against the textbook being treated as the single authority whose content must be memorised and reproduced.

• "Content repository" stops at storage — it describes a bank of information to be covered, leaving out the enquiry and extension NCF 2005 expects curricular material to provoke.

• "Disciplinary guideline" sits at the level of subject boundaries and academic conventions, a role NCF 2005 assigns to curriculum and syllabus documents rather than to the classroom textbook.

Hence, to align with NCF 2005, a social science textbook must primarily function as a suggestive learning resource.