CNS Control Center Slides Command Center Basics
Introduction to the Central Nervous System
Substance Awareness Lesson 1
Quick Reflex Challenge
The Ruler Drop
1. Partner A holds a ruler at the 30cm mark.
2. Partner B places their thumb and finger at the 0cm mark (don't touch!).
3. Partner A drops the ruler without warning.
4. Partner B catches it as fast as possible.
How did your brain tell your fingers to move so fast?
This speed is controlled by your CNS!
The Central Nervous System
The "Mainframe"
The Central Nervous System (CNS) consists of your brain and spinal cord .
It receives information from all over your body.
It processes that info and sends out commands.
It controls everything from breathing to blinking.
The Communication Loop
The Brain
Processes info and decides what to do.
Signals
The Organs
Heart, Lungs, Muscles follow orders.
"Stimulants are like a brick on the accelerator—they force the CNS to send 'GO' signals faster than usual."
Essential Question
"How do stimulants alter the natural functions of our central nervous system?"
Think about this as we map the brain today!
Body Command Map Worksheet Body Command Map
CNS Anatomy & Function
Name:
Date:
1. Defining the CNS
In your own words, what is the Central Nervous System (CNS) and what are its two main parts?
2. The Communication Loop
THE BRAIN
The Command Center
Signals sent
Feedback
HEART
LUNGS
Task:
In the white boxes above, describe what signals the brain sends to these organs during a normal day.
3. The Accelerator Effect
"Stimulants are substances that speed up the CNS. They tell the brain to send more frequent signals to the body, even when the body doesn't need to work harder."
If a student takes a stimulant, how would the communication in your map change?
Why might it be dangerous for your body to be on 'high speed' all the time?
Reflex Reflection
Based on the 'Ruler Drop' game, why is a fast CNS important for your survival? Give an example of a situation where you need fast brain-to-muscle communication.
Pulse and Power Sequence • Lesson 1 • Command Center Map
Reflex Racer Teacher Guide Teacher Resource
Reflex Racer Guide
Lesson 1 Facilitation: Command Center Basics
Time Estimate
45-50 Minutes
Goal
Identify the brain/spinal cord as the CNS and define its role in organ communication.
Materials
30cm Rulers (1 per pair)
CNS Slides
Body Command Worksheet
1 The Hook: Ruler Drop (10 min)
Setup: Have students pair up. One student is the "Dropper," the other is the "Catcher."
Key Point: After 5 trials each, ask: "Did you think about moving your hand, or did it just happen? How did the message get from your eyes to your brain to your fingers so quickly?"
Misconception Check: Some students think reflexes travel through the blood. Clarify that these are electrical signals traveling through nerves.
2 Direct Instruction: The CNS (15 min)
Use the CNS Control Center Slides to define terms:
CNS: The brain + spinal cord. It is the "CPU" of the body.Stimulant: A substance that forces the CNS to work at high speed (artificially).The Loop: Information flows: Organs → CNS → Command → Organs.
3 Mapping the Body (20 min)
Distribute the Body Command Map Worksheet .
Teacher Prompt 1
"What happens to your heart rate when you get scared? That's your CNS sending a signal. Now, what happens if a drug like caffeine sends that signal for no reason?"
Teacher Prompt 2
"Look at the 'Accelerator Effect' on page 2. If the brain is sending 'GO' signals all day, when does the heart get to rest?"
Wrap-Up Discussion
"If you were a professional athlete, why would a fast CNS be your best tool?"
"Why do we call the brain the 'Command Center' instead of the heart?"
Caffeine Surge Slides Caffeine Surge
The World's Most Popular Stimulant
Lesson 2 Heart & Health
Label Detective
Some energy drinks contain as much caffeine as four cups of coffee or ten cans of soda .
Think Fast:
"If you drink this much caffeine while sitting in class, where is all that extra 'energy' going?"
Hidden Caffeine
Caffeine is a stimulant. It is a drug that changes how your brain and body work.
The Accelerator Effect
When caffeine hits your system, it triggers the release of adrenaline .
Heart Rate Increases
Breathing speeds up
Muscles tense up (jitters)
REST
SODA
ENERGY
Simulated Heart Rate Surge
What Goes Up...
Must Come Down
The "energy" from caffeine is fake. It just uses up your body's energy reserves faster. When it wears off, you experience a crash .
Extreme Fatigue
Irritability
Headaches
Lab Time: Pulse Pattern
We are going to measure how activity affects your heart rate to understand how stimulants mimic physical stress.
Prepare your pulse-taking skills!
Drink Detective Worksheet Drink Detective
Caffeine Content Investigation
Agent Name
Section
1. The Evidence Log
Review the typical caffeine content (per 12 oz) below and answer the analysis questions.
Coke/Pepsi
35mg
Mtn Dew
54mg
Black Tea
47mg
Red Bull*
114mg
Monster*
160mg
*Red Bull and Monster amounts adjusted to 12oz for comparison.
How many cans of Coca-Cola would you need to drink to get the same amount of caffeine as one 12oz Monster energy drink?
Why do you think energy drink companies don't always list caffeine clearly on the front of the can?
2. Visualizing the Spike
Create a bar graph below representing the caffeine levels of at least 4 drinks from the log.
160mg
120mg
80mg
40mg
0
Drink 1
Drink 2
Drink 3
Drink 4
3. The Hidden Threat
Caffeine is also found in chocolate, some pain relievers, and "pre-workout" powders. Research suggests that for middle schoolers, consuming more than 100mg of caffeine a day can cause heart palpitations and anxiety.
Reflect:
"If a student drinks a Mtn Dew at lunch and a Red Bull after school, how much caffeine did they consume? Is this above or below the limit?"
Caffeine Investigation • Case File #02
Pulse Pattern Lab Sheet Pulse Pattern Lab
Investigation: Biological Accelerators
RESEARCHER:
PARTNER:
The Protocol
1. Resting Measurement:
Sit quietly for 1 minute. Find your pulse on your wrist or neck. Count the beats for 15 seconds. Multiply by 4 to get your Beats Per Minute (BPM) .
2. Active Measurement:
Perform 1 minute of jumping jacks or running in place. Immediately find your pulse and count for 15 seconds. Multiply by 4.
Data Collection
Condition Beats (15 sec) BPM (x4) RESTING ACTIVE (Natural)
Scientific Analysis
1. How did your heart rate change from Resting to Active? What do you think your CNS was trying to tell your body?
2. STIMULANT PREDICTION: Stimulants artificially put your body into an "Active" state, even while you are sitting still. Based on your lab results, how do you think a person's heart feels after drinking a large energy drink?
The Biological Cost
When you exercise, your heart rate naturally goes back to resting when you stop. But with stimulants, your body is forced into a high-energy state using up chemical reserves. When the drug wears off, your heart rate doesn't just go back to "normal"—it often drops below normal, causing the CRASH .
Pulse and Power • Lesson 2 Lab Sheet
Dopamine Drive Slides Brain Signal Hijack
Neurotransmitters and the Dopamine Pathway
Lesson 3 Brain Chemistry
The Brain's Wi-Fi
Your brain cells (neurons ) don't actually touch. They send chemical text messages to each other.
The Neurotransmitter
A chemical messenger that carries a signal across the gap (synapse) between neurons.
The Reward Molecule: Dopamine
Dopamine is released when you do something good for your survival (eating, exercise, winning a game).
The Natural High
It tells the brain: "That felt great! Do it again!"
Natural Rewards:
Eating a favorite meal
Getting an 'A' on a test
Hanging out with friends
The Stimulant Takeover
Stimulants hijack the brain by forcing it to release MASSIVE amounts of dopamine all at once.
1. The brain is flooded with pleasure signals.
2. The reward system is overwhelmed.
3. Natural rewards no longer feel good.
Activity: Signal Scramble
We are going to play a game of 'Telephone' to see how stimulants disrupt the brain's clear communication pathways.
Round 1: Normal
Clear, quiet messages.
Round 2: Hijacked
Shouted, scrambled messages!
Signal Scramble Activity Guide Simulation Guide
Signal Scramble Guide
Modeling Neurotransmission & Hijacking
Objective
To demonstrate how healthy brain communication (synaptic transmission) is clear and purposeful, and how stimulants disrupt this by overloading the system with "fake" signals.
1
Round 1: Healthy Signals
Instructions:
Line up 6-8 students in a row (representing a neural pathway).
Whisper a simple message to the first student: "Eating an apple gives the brain fuel."
Students pass the message to the end.
Scientific Parallel:
This represents a clear neurotransmitter signal (like natural dopamine) reaching its receptor and completing a thought or reward.
2
Round 2: The Hijack
Instructions:
Keep the same line. Assign 3 "Stimulant Students" to stand around the 3rd person in line.
The original message starts: "Healthy habits build a strong mind."
As it passes, the "Stimulant Students" loudly yell random words like "AMAZING!" "YES!" "MORE!" "POWER!" directly at the student receiving the signal.
Scientific Parallel:
Stimulants force the brain to release excessive dopamine. The real signals (learning, thinking) get lost in the "noise" of artificial pleasure.
The Debrief
To the Receiver:
"How hard was it to hear the real message? Did you feel overwhelmed by the loud 'Stimulant' students?"
To the Class:
"If your brain is constantly being shouted at by these fake 'YES!' signals, what happens to your ability to focus on real messages, like schoolwork or talking to a friend?"
© Pulse and Power • Neurotransmission Simulation
Brain Messenger Worksheet Brain Messenger
Topic: Synaptic Transmission
NAME:
CLASS:
Part 1: Map the Synapse
A
C
B: The Gap
A. NEURON
The nerve cell that sends or receives the electrical signal.
B. SYNAPSE
The tiny gap between two neurons where chemicals travel.
C. RECEPTOR
The 'lock' that opens when the right chemical 'key' arrives.
Part 2: The Dopamine Hijack
1. Why do we call dopamine a 'reward' chemical? Give one natural example of when your brain releases it.
2. How do stimulants 'hijack' this process? Use the terms Flood and Overwhelm in your answer.
3. After a stimulant flood, the brain often 'shuts down' some receptors to protect itself. How might this make a person feel when they try to enjoy natural rewards like food or music later?
Brain Signal Hijack • Student Resource
Tolerance Trap Slides The Tolerance Trap
How the Brain Adapts to Stimulants
Lesson 4 The Cycle of Addiction
The Volume Problem
Imagine you listen to your favorite song at MAX VOLUME all day, every day.
The Result:
Your ears will eventually "turn down" the sensitivity so it doesn't hurt. Now, regular music sounds too quiet. To feel the same excitement, you'd need it even louder—but you're already at max.
This is Tolerance
The Brain's Defense
When stimulants flood the brain with dopamine, the brain protects itself by closing receptors .
1
Normal Brain
2
Drug-Flooded Brain
3
Adapted (Tolerant) Brain
Biological Shift
Healthy
Active Receptors
Tolerant
Shut Down
"The brain 'muffles' the noise to survive."
The Cycle of Dependence
Use Drug
Floods brain with dopamine
Tolerance
Brain shuts down receptors
The Crash
Feel terrible and depleted
More Drug
Need MORE to feel "normal"
"How does tolerance turn a 'choice' into a 'need'?"
When the brain changes its own chemistry to adapt to a drug, the body physically relies on that drug just to feel baseline.
Volume Vortex Worksheet Volume Vortex
The Science of Tolerance
RESEARCHER:
The Loud Music Analogy
If you walk into a room with music blasting at 100%, it feels painful and overwhelming. But if you stay there for 3 hours, your brain "adjusts." You don't notice the loudness as much because your brain has effectively "turned down the volume" to protect your hearing.
Now, if you step out into a quiet library, you can't hear someone whispering right next to you. The library is "normal," but your ears are still set to "MAX VOLUME PROTECTION" mode.
1 How is a stimulant "flood" like the 100% volume music?
2 In the library example, why couldn't you hear the whisper? How does this relate to why natural rewards (like eating a snack or seeing a friend) don't feel good to someone who uses stimulants regularly?
3 Define TOLERANCE in your own words based on this analogy.
The Trap
STIMULANT USE
Brain is flooded
ADAPTATION
Brain shuts down receptors
What happens next? Draw an arrow back to the first box and explain why.
Pulse and Power Sequence • Tolerance Cycle
Adaptation Analysis Handout Adaptation Analysis
Biological Data Handout
Dopamine Receptor Visualization
HEALTHY BRAIN
Normal number of active receptors.
Stimulant Dependent Brain
Downregulation: Receptors are shut down.
Downregulation Statistics
User Stage Receptor Sensitivity Reward Response Non-User 100% (High) Full satisfaction from food/friends. Early User 75% (Medium) Needs drug to feel high. Chronic User 20% (Low) Needs drug just to feel "not sick."
Data Analysis Question:
"Looking at the data above, explain why a chronic stimulant user might feel deeply depressed or unmotivated when they are NOT using the drug."
© Pulse and Power • Biological Adaptation Analysis
Long Term Logic Slides Long Term Logic
Chronic Impacts on Body & Mind
Final Lesson Health & Science
The Chronic Heart
Remember the "Accelerator Effect"? Chronic stimulant use means the heart is overworked for years.
High Blood Pressure
Heart Muscle Strain
"Imagine a car engine running at 7,000 RPM while parked in a garage. Eventually, parts will break."
Mental Adaptation
Because the CNS is always "ON," the brain loses its ability to calm down naturally.
Long-term effects:
• Chronic Anxiety
• Sleep Disorders (Insomnia)
• Paranoia
• Mood Swings
Final Project: Infographics
Scientists use visuals to help people understand complex dangers. You will create your own "Pulse and Power" Infographic.
Must Include:
The CNS Loop
The Dopamine Hijack
The Tolerance Trap
Heart Impacts
Scientific Layout
Final Synthesis
"Stimulants don't just 'wake us up'—they rewrite the rules of how our brain and heart communicate."
You are now a Pulse & Power Scientist.
Health Hazard Infographic Project Health Hazard Infographic
Final Sequence Project: Pulse and Power
The Challenge
You are a medical graphic designer tasked with creating a "Warning Infographic" for a local health clinic. Your goal is to use the science we learned in this unit to explain why chronic stimulant use is dangerous to the body.
Content Checklist
The CNS Map: Show how the brain, heart, and lungs are connected.The Hijack: Explain how stimulants flood the synapse with dopamine.Tolerance Trap: Use an analogy (like the volume vortex) to explain downregulation.Long-Term Toll: List 3 chronic physical or mental impacts.
Design Rules
Visual Balance: Use icons or drawings to support your text.Clear Hierarchy: Use big titles for big ideas and small notes for details.Vocabulary: Use at least 5 scientific terms (e.g., Synapse, Dopamine, CNS).
Sketch & Plan Your Layout Below
Grading Rubric
Category
Exemplary (4)
Proficient (3)
Developing (2)
Scientific Accuracy
All processes (CNS, Hijack, Tolerance) explained flawlessly.
Most processes explained correctly; minor errors.
Multiple scientific misunderstandings present.
Visual Impact
Graphics clearly explain the science; layout is professional.
Graphics are present and support text well.
Graphics are messy or don't relate to the science.
Final Project • Health & Physical Education • 6th Grade
Stimulant Scientist Final Quiz Stimulant Scientist Quiz
Unit Final Assessment
NAME:
DATE:
Part 1: Core Concepts
1. Which two organs make up the Central Nervous System (CNS)?
Heart and Lungs
Brain and Spinal Cord
Brain and Heart
Muscles and Nerves
2. What is the role of a neurotransmitter like dopamine?
To pump blood to the muscles faster.
To carry chemical messages across the gap between neurons.
To filter toxins out of the liver.
3. What is "The Crash" caused by?
The drug starting to work in the brain.
The depletion of chemical reserves after a drug wears off.
Drinking too much water after taking a stimulant.
Part 2: Scientific Reasoning
4. Explain the concept of TOLERANCE. Why does a person eventually need more of a drug to get the same effect?
5. How does chronic stimulant use affect the heart over time? Use the "Accelerator" analogy from class.
Part 3: Fact Check
Caffeine is technically a drug because it changes how the CNS functions.
TRUE FALSE
"Downregulation" means the brain grows MORE receptors to catch the drug signals.
TRUE FALSE
Stimulants can cause long-term mental health issues like chronic anxiety.
TRUE FALSE
© Pulse and Power Final Assessment • Page 1 of 1
