QS10—Levels and rates of change

Distinguish between a change in the level of a variable and its rate of change.

Use qs10—levels and rates of change to connect the rule to the data and decision in the question.

This matters because qs10—levels and rates of change determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply qs10—levels and rates of change to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: QS10—Levels and rates of change is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.