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☣️ Operation: Containment - Day 2: Unlocking the Time Variable

☣️ Operation: Containment - Day 2: Unlocking the Time Variable

The infection is exponential, but the solution is logarithmic.

Exponential Lesson Day 2
Exponential versus Logarithms Day 2


"The outbreak is a function of *rate*, but our survival is a function of *time*. Today, we find the key to unlock 't'." - Director Stone

📜 Mission Briefing

  • 🎯 Mission Objective: Convert between exponential and log form to "unlock" and solve for the unknown variable.
  • Class Time: 1 Class Period (50-70 mins)
  • 📚 Subject & Level: Secondary Math 3 / Algebra 2
  • 👻 The Adventure: Our infection models are locked. We need to find the inverse operation—the logarithmic key—to solve for 't' and find out *when* the breach will happen.

🎒 The Armory

📦 Unit-Level Gear


🔧 Day 2 Gear


🧑‍🏫 Analyst Support (Video)




Stop the Breach Logarithms is the key
Stop the Breach - Logarithms is the Key


👕 Costume & Prop Ideas:

  • QERC Director: A simple lab coat or a black polo with your custom-printed QERC ID badge. Look professional, concerned, and in-command.
  • Student Badges: Have students create their own! Use the ID Badge Template here. This gets *massive* buy-in!
Exponential to Logarithmic Equations Day 2
Director Stone Badge

🗺️ The Walkthrough

✨ Introduction: The Motivational Message (Approx. 5-7 mins)

The Script:

"Recruits. Yesterday, you successfully identified the two primary signals in the data stream: the 'Infection' signal—that terrifying exponential growth—and the 'Containment' signal, the log curve showing our resources depleting.

But we have a critical problem. We can see the *rate* of infection. We know the virus is doubling, tripling, quadrupling... but we don't know *when*. We have equations like `10,000 = 2^t`, where 't'—time—is trapped in the exponent. We are flying blind.

Today, we change that. We are activating a new protocol: the **Logarithm**. It is the *inverse*. It is the *only* mathematical tool designed to 'unlock' a variable from the exponent. Your mission today is to master this "key" and convert these locked equations into a form we can actually solve. Pay attention. This one is critical."

[YOUR INTRODUCTORY VIDEO GOES HERE]

⚔️ Phase 1: The Warm-Up / Daily Briefing (Approx. 10-15 mins)

The Story: We can't decrypt the new data until we review the old data. Recruits will access their "Daily Briefing" starter doc.

The Activity: Students complete the "Daily Briefing" (Starter). This reviews Day 1 graphing and introduces the day's core concept. You, as Director Stone, will introduce the key to success: the **"Decryption Phrase"** (your mantra: "Base comes down, make the X!").

Exponential to Logarithmic Form Exponential to Logarithmic Form Lesson

🔥 Main Activity: The "Target of 20" Mastery Loop (Approx. 25-35 mins)

The Story: This is the "Decryption Drill." We need to master this new skill with speed and accuracy. Recruits must correctly decrypt **20 transmissions** (problems) to prove they are field-ready.

The Activity (Mastery Learning & Student Choice):

  1. Worked Examples: You, as "Director Stone," will present the QERC Briefing Slides and model the 3 new decryption skills, repeating the "Decryption Phrase" ("Base comes down, make the X") for every example.
  2. Mastery Drill: Students begin the "Target of 20 CORRECT." They have a *choice* of how to practice.  Usually the mix the 2. 
    • **Option A: The Kahoot Drill:** Use the fast-feedback Kahoot. (I go over each example if students miss one, and if they didn't miss that one, they are choosing a problem off of the paper. Feed back is happening for just those that need the support. )
    • **Option B: The Paper Drill:** Use a traditional worksheet (if you have one).

  3. Reteach Loop: This is key! After the first Kahoot attempt, you *reteach* the most-missed problems as a class. Students then try again, aiming for that "Target of 20." This cycle of practice, feedback, and reteaching continues until the class shows mastery.
  4. Exponential to Logarithmic Form
    Exponential to Logarithmic Form Lesson

👾 The Final Boss

📝 The Final Field Certification (At Home Quiz)

The Story: Time to prove you're ready. Complete your certification exam. You must pass to be cleared for the next mission.

The Activity: Students work individually on the Final Certification Exam (IDO). (Note for teachers: To get access to this amazing resource, please contact darcistone@alpinedistrict.org! Also, please hit "submit" to start the quiz fresh, as it generates a new version on each attempt.)

🎬 Epic Reward: Time Is On Our Side!

The Story: "Mission Accomplished, Analysts. You've given us the key. We can now solve for 't'. You didn't just learn math today... you bought us *time*."

[YOUR EPIC REWARD VIDEO WILL GO HERE!]

🏆 The Level Clear Screen: Performance Review

The Story: Time to file your End-of-Shift Report. We need to know what you know. Be honest. This is how we get better.

The Activity: Students use their Printable "End-of-Shift" Report to complete their Self-Reported Grade and Cognitive Task Analysis.

🔟 Master Analyst (A "10" Report)

I can convert fluently between exponential and log form. I can use the "Decryption Phrase" to solve all 3 types of problems, even if they look tricky, and I can teach it to someone else.

My Reflection: (Explain *how* you used the 'Decryption Phrase' ("Base comes down, make the X") to convert `125 = 5^t` AND `log_3(x) = 4`.)

My Answer: _________________________

🎱 Skilled Analyst (An "8" Report)

I can correctly use the "Decryption Phrase" ("Base comes down, make the X") to convert both ways. I can also use Backwards PEMDAS to solve for 'x' most of the time, but I might make a small error.

My Reflection: (Explain *how* you used the 'Decryption Phrase' to convert `64 = 4^t`.)

My Answer: _________________________

⭐ Analyst-in-Training (A "6" Report)

I understand the "Decryption Phrase" ("Base comes down, make the X") and can convert *from* exponential *to* log form. I am still a little confused about converting the other way or using Backwards PEMDAS.

My Reflection: (Fill in the blank: The "Decryption Phrase" is: "Base comes down, make the ____.")

My Answer: _________________________

🌱 New Recruit (A "4" Report)

I was present for the briefing, but I'm still confused about what the "base" is and what "log" means. I need to review the support video and ask for help tomorrow.

My Reflection: (What is the *one* thing from today that was most confusing?)

My Answer: _________________________

🗣️ De-Brief: Cognitive Task Analysis (Class Discussion)

After the Exit Tickets are in, lead a class discussion using these prompts:

  • "What was the 'muddiest' (most confusing) part of using the 'Decryption Phrase'?"
  • "When you converted from Log *back* to Exponential, what was the first thing your brain looked for?"
  • "Why is 'Backwards PEMDAS' a good way to describe solving for 'x' *after* you've converted?"

🧐 Hattie Expert Debrief (For Teachers)

This lesson is designed to have an extremely high effect size by stacking several of Hattie's most powerful strategies. Here's the "why" behind the design:

  • Self-Reported Grade (d = 1.33): This is one of the *highest* effect sizes. The "Level Clear Screen" isn't just a grade; it's a tool for students to evaluate their own understanding, which is a powerful predictor of success.
  • Teacher Clarity (d = 0.75): The "Decryption Phrase" ("Base comes down, make the X") is the core of this. It's a simple, memorable, and repeatable success criterion that students can latch onto.
  • Metacognitive Strategies (d = 0.69): We achieve this with the Cognitive Task Analysis (CTA) built into the rubric. We don't just ask "Did you get it?" We ask "Explain *how* you got it using the Phrase." The class discussion prompts further this by having students reflect on their *thinking process*.
  • Mastery Learning (d = 0.65): The "Target of 20" loop is a perfect example. We're not moving on with a C-. We practice, get feedback (from Kahoot), you reteach, and we practice again until we demonstrate proficiency.
  • Worked Examples (d = 0.57) & Direct Instruction (d = 0.60): The lesson starts with you (the expert) clearly modeling the "Decryption Phrase" from the slides. This lowers cognitive load before they begin practice.
  • Student Choice (d = 0.57): Giving students the choice between the Kahoot drill or a paper drill gives them a sense of agency over their learning, increasing buy-in.


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