C.2.1—Mathematical symbols

Understand and use =, <, ≪, ≫, >, ∝, ≈ and Δ in physical relationships.

Use c.2.1—mathematical symbols to connect the rule to the data and decision in the question.

This matters because c.2.1—mathematical symbols determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply c.2.1—mathematical symbols to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: C.2.1—Mathematical symbols is not a universal recommendation. Check the syllabus scope, assumptions, units and the limits of the evidence before generalising.