4.3.2.3a - Understanding and calculation of the terms of trade

Understanding and calculation of the terms of trade.

Use a - understanding and calculation of the terms of trade to connect the rule to the data and decision in the question.

This matters because a - understanding and calculation of the terms of trade determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply a - understanding and calculation of the terms of trade to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: a - Understanding and calculation of the terms of trade is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.