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Lesson 14 min 20 XP

Writing PF Constructive Cases

How to build a 4-minute constructive speech with strong contentions, evidence, and impacts.

The 4-Minute Constructive

Your constructive is your team's opening argument. In 4 minutes, you need:

Framework (optional, 15-30 seconds)

Some teams set a framework — e.g., 'The Pro team believes this round should be evaluated through the lens of US national security interests.' This is less formal than LD's value/criterion but can frame the judge's evaluation.

Contention 1 (1:30-2:00)

Your strongest argument. Structure:

  • Tag line: One sentence summary ('Contention 1: Arms sales fuel the Yemen crisis')
  • Evidence: 2-3 pieces of cited evidence with author, date, and qualifications
  • Analysis: Explain why the evidence proves your point — don't just read cards and move on
  • Impact: What's the real-world consequence? Quantify when possible.

Contention 2 (1:30-2:00)

Your second argument, ideally on a different dimension (if C1 is moral, C2 could be strategic).

Signposting

Always say 'Contention 1,' 'Contention 2,' etc. PF judges — especially lay judges — need verbal signposts to follow your case.

Writing PF Constructive Cases | Model Diplomat