Enrich · Mathematics Extension 2 11–12 – Year 12 · The nature of proof

Enrich Define equivalence of P and Q, as both P⇒Q and Q⇒P, denoted P⟺Q or P↔Q, read as ‘ P if and only if Q ’, commonly abbreviated ‘ P iff Q ’

Extension and enrichment for students who are ready to go deeper: rich tasks, problem solving and open-ended challenges.

← Back to core resources

Enrichment for this dot point

No enrichment tasks tagged to this exact dot point yet.