Intro to Impact Slides Impact Calculus
Mastering the Art of Prioritization
Strategic Briefing 01
The Donor's Dilemma
A hypothetical choice in consequence.
Option A
Spend $100 to provide life-saving medicine to one person who is dying right now.
Option B
Spend $100 to fund research that might save 1,000 people in 50 years.
What is your choice? Why?
What is Impact Calculus?
It is the weighing mechanism used in debate to compare two different outcomes when both seem important.
"If the judge has to choose which impact is worse, how do we give them the tools to decide objectively?"
The Three Pillars
Magnitude
How big?
The size, scope, or severity of the impact. (e.g., 1 person vs. 1,000 people)
Probability
How likely?
The chance that the impact will actually happen. (e.g., Guaranteed vs. Possible)
Timeframe
How soon?
How quickly the impact will occur. (e.g., Right now vs. In 50 years)
Mission Parameters
01
Identify the components in any debate claim.
02
Decide which pillar is most important for the specific round.
03
Articulate the weighing logic clearly to the judge.
Debater Check-In
Can you think of a situation where a fast impact is more important than a large impact?
Impact Metrics Worksheet Impact Lab
Metric Identification Briefing
NAME: ________________________________
DATE: ________________________________
UNIT: IMPACT CALCULUS 101
01
The Three Pillars Review
Briefly define each metric in your own words. Why does this metric matter in a debate?
Magnitude
Probability
Timeframe
02
Metric Dissection
Read each scenario and identify the specific details that relate to Magnitude, Probability, and Timeframe.
Scenario A: The Coastal Sea Wall
"We must build the sea wall now. While there is only a 30% chance of a catastrophic storm hitting this decade, if it does hit, it will displace 50,000 residents and cause $4 billion in damages. Construction takes 5 years."
Magnitude
Probability
Timeframe
Scenario B: The Student Lunch Program
"The school board should implement the free breakfast program tomorrow. Every single student (1,200 total) will receive immediate access to nutrition, which studies show is guaranteed to improve focus within the first week."
Magnitude
Probability
Timeframe
03
The Strategic Weigh-In
Comparing Scenario A and Scenario B:
If the city only has enough money to fund one project, which one should they choose? Use at least two of the impact metrics to justify your answer.
Impact Calculus Teacher Guide Strategic Playbook
Teacher Guide & Answer Key
UNIT: IMPACT CALCULUS
GRADE: 10TH GRADE ELA
01
Unit Architecture
Lesson 1
Definitions & ID
Lesson 2
Risk Assessment
Lesson 3
Speed & Permanence
Lesson 4
The "Even-If"
Lesson 5
Rapid Synthesis
02
Official Answer Key
Lesson 1: Impact Metrics Worksheet
Scenario A (Sea Wall): Magnitude = 50,000 residents/$4B; Probability = 30%; Timeframe = Construction 5yrs/Storm this decade.
Scenario B (Lunch Program): Magnitude = 1,200 students; Probability = Guaranteed; Timeframe = Tomorrow/Within the first week.
Lesson 2: Risk Assessment Matrix
A (Asteroid): High Magnitude / Low ProbabilityB (Shoelace): Low Magnitude / High ProbabilityC (Global Warming): High Magnitude / High ProbabilityD (Lottery): Low Magnitude / Low Probability
Lesson 3: Permanence Audit
Spectrum Order: D (Power Outage) → A (Tax) → E (Savings) → C (Landmark) → B (Extinction).
03
Facilitation Briefing
The Hook Technique
Always start with the "Donor Dilemma." Students often want to save everyone, but forcing a binary choice is essential for learning impact calculus. Don't let them find "middle ground" solutions yet.
The "Even-If" Transition
Students struggle with "losing" an argument. Remind them that the "Even-If" isn't a surrender; it's a trap. You are pulling the opponent into a fight on your terrain (the impact level).
04
Duel Scoring Rubric
Criterion Needs Work Strategic Mastery Metric Use Mentions impact but no metric. Uses one metric (e.g. Magnitude). Uses multiple metrics comparatively. The Pivot Only talks about their side. Attempts a basic comparison. Smoothly uses "Even-If" structure. Warranting Claims the impact is big. Explains why it's big. Explains why "big" is better than "fast".
Risk and Reality Slides Risk & Reality
Magnitude vs. Probability
Strategic Briefing 02
The Actuary's Hook
How does an insurance company stay in business?
The Low-Risk Event
Insurance for cracked phone screens.
High Probability (It happens a lot)
Low Magnitude (It's cheap to fix)
The High-Risk Event
Insurance for house fires.
Low Probability (Rarely happens)
High Magnitude (Total loss of asset)
The Central Tension
In debate, you will often find yourself choosing between:
Low Probability / High Magnitude
Ex: Nuclear War
VS
High Probability / Low Magnitude
Ex: Economic Inflation
Strategy: Weighing Magnitude
The "Magnitude Wins" Argument
"The severity is so high that any risk is unacceptable."
Key Phrases:
"Precautionary Principle"
"Existential Risk"
"Irreparable Harm"
Strategy: Weighing Probability
The "Probability Wins" Argument
"A definite, smaller benefit is worth more than a huge benefit that never happens."
Key Phrases:
"Certainty of Outcome"
"Practical Utility"
"A Bird in the Hand"
Scenario Showdown
Impact A
Preventing a 1 in 1,000,000 chance of an asteroid hitting Earth tomorrow.
Impact B
Providing 10,000 students with new textbooks that are 100% guaranteed to arrive.
Which one wins the round?
Risk Assessment Matrix Worksheet Risk Assessment
Magnitude vs. Probability Matrix
NAME: ________________________________
DATE: ________________________________
UNIT: PROBABILITY VS MAGNITUDE
01
Mapping the Consequences
Place the following scenarios on the matrix below based on their Probability (how likely) and Magnitude (how severe).
Magnitude (Severity)
Probability (Likelihood)
HILP Low Prob / High Mag
HIHP High Prob / High Mag
LILP Low Prob / Low Mag
LIHP High Prob / Low Mag
A. Asteroid Strike: Wipes out life on Earth; occurs once every 100 million years.
B. Broken shoelace: Annoying; happens about twice a year for most people.
C. Global Warming: Drastic sea level rise; scientific consensus says it's happening now.
D. Winning the Lottery: Multi-million dollar gain; 1 in 300 million chance.
02
Constructing the Comparison
The Magnitude Argument
Imagine you are debating someone who says we shouldn't worry about an Asteroid Strike (Scenario A) because the probability is too low. Write a response arguing why Magnitude should be the primary concern.
The Probability Argument
Now imagine you are debating someone who says we should spend all our money preparing for Winning the Lottery (Scenario D). Write a response arguing why Probability is more important here.
Final Reflection
"Is it better to solve a small problem that is definitely happening, or a huge problem that might happen?" Explain your logic.
Time and Permanence Slides Tick Tock
Timeframe & Reversibility
Strategic Briefing 03
The Time-Traveler's Choice
Which event do you change?
Option A
Stop a minor forest fire today before it spreads to a nearby town.
Timeframe: Immediate
Option B
Stop a scientific discovery 50 years ago that led to a permanent global shift.
Timeframe: Delayed / Permanent
Timeframe
1. Immediacy
How quickly does the impact occur? A fire happens now; a recession happens over months.
2. Speed of Response
Fast impacts require fast solutions. Slow impacts allow for more deliberation.
"If the house is burning down today, we don't have time to discuss the zoning laws for the rebuild."
— The Immediacy Argument
Reversibility
Reversible
Impacts that can be fixed or undone later.
Financial loss (Money can be earned back)
Policy changes (Laws can be repealed)
Irreversible
Impacts that are permanent once they happen.
Death (The final consequence)
Environmental Extinction
Winning on Timeframe
Root Cause
"My impact happens first and causes their impact."
Prerequisite
"We must solve my impact before we can even think about theirs."
Permanent Link
"Once my impact happens, it's game over. There is no going back."
Permanence Audit Worksheet The Permanence Audit
Timeframe & Reversibility Analysis
NAME: ________________________________
DATE: ________________________________
UNIT: TIMEFRAME & REVERSIBILITY
01
The Reversibility Spectrum
Not all impacts are created equal. Some can be undone with enough effort, while others are final. Categorize the following impacts by placing their letter on the spectrum from Fully Reversible to Completely Irreversible.
Reversible Difficult to Fix Irreversible
A
A 5% tax increase on luxury items.
B
The extinction of the Honeybee.
C
Demolition of a 500-year-old historic landmark.
D
A temporary city-wide power outage for 4 hours.
E
Loss of 10% of a person's life savings.
02
The "Fastest-First" Argument
Scenario: The Infrastructure Crisis
"Our city has two problems. First, a bridge is crumbling and will likely collapse within the next 48 hours. Second, our education system is failing and will cause a major economic crisis in 15 years."
Write a 3-4 sentence argument for why the Bridge should be the priority, using the concept of Timeframe.
Now, write a response for the Education side, using the concept of Reversibility (e.g., once a generation is uneducated, it's hard to go back).
Strategy Tip:
When arguing timeframe, always explain why sooner is better. Usually, it's because a fast impact removes the ability to solve other problems later. We call this a "bottleneck" or a "prerequisite."
The Power of Even If Slides The Even-If
Mastering Strategic Concession
Strategic Briefing 04
The Ultimate Pivot
Winning even when you "lose" the argument.
Formula
"Even if my opponent is right that [Scenario X] will happen..."
"...you should still vote for me because [Impact Y] is more important."
Why it Works
It shows the judge you are fair.
It provides a safety net.
It forces a direct comparison.
"Don't spend the whole round arguing about whether the sun will rise. Spend the round arguing about why the sunrise matters more than anything else."
The 3-Step Structure
01
Concede
Grant them their premise for the sake of argument.
"Even if they win..."
02
Compare
Introduce your impact as the superior metric.
"...our impact still outweighs on..."
03
Warrant
Explain WHY your metric (Mag/Prob/Time) is better.
"...because Magnitude is key..."
Example Script
"Even if my opponent is right that solar panels are expensive to install..."
"...the Magnitude of preventing climate collapse outweighs the Reversible financial cost of the installation."
Practice this aloud now!
Even If Blueprint Worksheet The Even-If Blueprint
Strategic Concession & Impact Weighing
NAME: ________________________________
DATE: ________________________________
UNIT: CONSTRUCTING THE EVEN-IF
01
Anatomy of a Pivot
Step 1
"Even if [My Opponent is right about X]..."
Step 2
"...you still vote for me because [Impact Y] outweighs on [Metric]..."
Step 3
"...because [Explain why that metric is the most important]."
02
Blueprint Drills
Fill in the blanks to construct a complete "Even-If" response for each scenario. Be specific with your weighing logic (Magnitude, Probability, or Timeframe).
Drill 01: School Uniforms
Your opponent argues that uniforms limit student self-expression. You argue that uniforms reduce bullying and social inequality.
"Even if my opponent is right that ,"
"it still doesn't matter as much as reducing bullying because outweighs on ,"
"because ."
Drill 02: Space Exploration
Your opponent argues that Mars missions are too expensive. You argue that establishing a second home for humanity is the only way to prevent total extinction.
Write your full Even-If statement below:
Pro-Tip: The "Even-If" Concession
When you concede an argument using "Even If," you aren't saying they are right. You are saying that even in a world where they are right, you still win. It's the most powerful way to address a point you are losing.
Impact Duel Slides Impact Duel
The Ultimate Calculus Drill
Strategic Briefing 05
Mission: The Duel
Rapid-fire weighing competition.
01
Draw
Two random impacts are drawn from the deck.
02
Prep
You have 60 seconds to find your "winning" metric.
03
Duel
Deliver a 30-second speech weighing your impact over theirs.
The Combatant's Checklist
Can I win on Magnitude? (Scope/Severity)
Can I win on Probability? (Likelihood)
Can I win on Timeframe? (Immediacy/Permanence)
Sample Duel
Impact A
Preventing a local park from closing forever.
Impact B
Stopping a 1-day city-wide transit strike.
30 SECONDS ON THE CLOCK. GO!
Debrief
Which metric was the most successful today? Why did the judge vote for one over the other?
Magnitude
Probability
Timeframe
Impact Duel Cards The Impact Deck
Scenario Cards for Impact Duel Drill
Teacher: Print this page, cut along the dashed lines, and shuffle. Use these cards for the "Impact Duel" activity in Lesson 5.
Impact Card
Preventing a 10% increase in the city's sales tax for the next 2 years.
TYPE: ECONOMIC ID: #001
Impact Card
Establishing a permanent wildlife preserve that saves 3 endangered species.
TYPE: ENVIRONMENTAL ID: #002
Impact Card
Providing every public school student with a new laptop, guaranteed by next month.
TYPE: EDUCATION ID: #003
Impact Card
Stopping a 1-in-500 year flood that would damage the city's historic downtown.
TYPE: DISASTER ID: #004
Impact Card
Funding a 10-year research grant to cure a rare but fatal genetic disease.
TYPE: HEALTH ID: #005
Impact Card
Removing all plastic waste from the local river within the next 48 hours.
TYPE: ENVIRONMENTAL ID: #006
Impact Card
Rebuilding the city's main library after a fire; takes 3 years to complete.
TYPE: COMMUNITY ID: #007
Impact Card
Increasing the minimum wage by $2.00, starting immediately.
TYPE: ECONOMIC ID: #008
