Brain Science Unit Plan Teacher Guide Brain Science
Unit Plan & Facilitation Guide
Audience: 10th Grade (Tier 2)
Total Time: 210 min (3 Sessions)
Approach: Interactive Inquiry
WHY THIS MATTERS
Understanding how drugs affect the brain empowers students to make healthier choices, reduces risk behaviors, and builds critical thinking about substance use. Scientific insight fosters long-term cognitive and emotional wellbeing.
LEARNING OBJECTIVE
Students will identify neuron structures, analyze how substances disrupt neural communication, and apply this knowledge in assessments and informed decision-making activities.
Teacher Preparation
Review Neurons Under Siege slide deck.
Print copies: Substance Effect Chart , Brain Quiz , and Research Template .
Set up projector/smartboard and arrange seating for small-group work.
Prepare Tier 2 scaffolds: sentence starters and case studies.
Required Materials
Neurons Under Siege Slides
Substance Effect Chart Worksheet
Brain Quiz & Answer Key
Neural Research Template
Session Breakdown
Session 1: Neuron Structure & Substance Intro
70 Minutes
10 min
Warm-Up: "Main parts of a neuron?" Record on board using Slides 1–3. Scaffold with sentence starters (e.g., "The axon ___").
20 min
Direct Instruction: Slides 4–12. Cover dendrites, soma, axon, synapse. Introduce alcohol/nicotine impacts on neurotransmission.
25 min
Guided Activity: Distribute Chart. Model "Alcohol" row. Students pair up for "Nicotine" and one more. Circulate with guiding questions.
15 min
Exit Ticket: Quick write: 3 neuron facts + 1 lingering question. Collect for formative assessment.
Session 2: Analyze Substance Effects
70 Minutes
10 min
Recall: Review neuron parts and exit ticket findings on the board.
30 min
Deep Dive: Complete Chart (Marijuana, Caffeine, Prescription Drugs). Use slide notes as reference. Support Tier 2 with organizers.
20 min
Case Study: Peer-pressure scenario analysis. Discuss how neural effects influence behavior and brainstorm coping strategies.
10 min
Quick Check: 2-question pop quiz on mechanisms. Review as a class immediately.
Session 3: Assessment & Extension
70 Minutes
10 min
Review & Q&A: Summarize neuron function and substance impacts. Address final questions.
25 min
Brain Quiz: Individual assessment. Offer extra support/time for Tier 2 as needed.
25 min
Feedback & Project: Review quiz answers. Introduce optional Research Extension project using the template.
10 min
Reflection: Round-robin: one smart decision strategy based on science. Collect takeaways.
Neurons Under Siege Slides Presentation Neurons Under Siege
How substances affect neuron communication and your brain health.
What Is a Neuron?
1
Dendrites
2
Cell Body (Soma)
3
Axon
4
Synapse
The brain's building blocks
Neuron Structure
Dendrites
Receive signals from neighboring neurons
Cell Body
Processes information and maintains the cell
Axon
Transmits impulses toward the synapse
Synapse & Neurotransmission
1. An Impulse travels down the axon.
2. Neurotransmitters are released into the synaptic cleft.
3. Receptors on the next neuron receive the message.
The Gap
Where chemicals bridges the distance between thoughts
How Substances Interfere
Mimic
They trick the brain by acting like natural chemicals
Block
They clog receptors, preventing real signals from getting through
Overstimulate
They flood the system with too much signal at once
Alcohol
Depressant
Mechanism
Enhances GABA, reduces glutamate
Short-Term
Slowed reaction, impaired balance
Long-Term
Brain shrinkage, memory loss
Nicotine
Stimulant
Mechanism
Stimulates acetylcholine receptors
Short-Term
Alertness, dopamine release
Long-Term
Severe addiction, heart issues
THC
Marijuana
Mechanism
Binds cannabinoid receptors
Short-Term
Altered perception, memory gaps
Long-Term
Learning and memory deficits
Caffeine
Social Stimulant
Mechanism
Blocks adenosine receptors
Short-Term
Increased heart rate, jitteriness
Long-Term
Tolerance, withdrawal headaches
Opioids
Pain Relievers
Mechanism
Bind opioid receptors
Substance Effect Chart Worksheet Substance Effect Chart
Brain Science Unit • Session 1 & 2
Name: ____________________________________
Date: _____________________________________
Instructions
For each substance below, describe its mechanism of action in the brain, list at least two short-term effects , and list at least two long-term effects . Use your notes and the Neurons Under Siege slide deck to assist.
Substance Mechanism of Action Short-Term Effects Long-Term Effects Alcohol Nicotine Marijuana (THC) Caffeine Prescription (Opioids)
Discussion & Reflection
In your pairs: Which substance do you think poses the greatest risk to brain health, and why?
Brain Quiz Quiz Brain Quiz
Stay Sharp • Final Assessment
Name:
Date:
Read each question carefully. For multiple-choice questions, circle the best possible answer. For the open-response question, provide a detailed scientific explanation.
1 Which part of a neuron primarily receives signals from other neurons?
A. Axon
B. Dendrites
C. Cell Body (Soma)
D. Synapse
2 What occurs at the synapse during neurotransmission?
A. An electrical impulse jumps directly to the next neuron
B. Neurotransmitters cross the gap and bind to receptors
C. The cell body generates new dendrites
D. Myelin is produced to speed signals
3 Alcohol affects neurotransmission by enhancing which inhibitory neurotransmitter?
A. Dopamine
B. Glutamate
C. GABA
D. Serotonin
4 Nicotine produces its primary effects by stimulating which receptors?
A. Dopamine receptors
B. Acetylcholine receptors
C. GABA receptors
D. Cannabinoid receptors
5 Caffeine increases alertness by blocking which type of receptor?
A. Glutamate
B. Dopamine
C. Adenosine
D. GABA
6 Explain how a drug can disrupt communication between neurons. Provide one specific example of a substance and describe its mechanism of action and one short-term effect. Brain Quiz Answer Key Quiz Answers & Explanations
Stay Sharp • Teacher Resource
Answer Key
1. Which part of a neuron primarily receives signals?
B. Dendrites
Explanation: Dendrites are branch-like extensions that receive chemical signals (neurotransmitters). The axon carries signals away, the cell body integrates them, and the synapse is the gap.
2. What occurs at the synapse during neurotransmission?
B. Neurotransmitters cross gap
Explanation: Neurotransmitters are chemicals that cross the synaptic cleft and bind to receptors on the receiving neuron. This is a chemical process, not a direct electrical jump.
3. Alcohol enhances which inhibitory neurotransmitter?
C. GABA
Explanation: GABA is the primary inhibitory neurotransmitter. Alcohol increases its effects, leading to slowed reactions and impaired coordination.
4. Nicotine stimulates which receptors?
B. Acetylcholine
Explanation: Nicotine mimics acetylcholine and binds to nicotinic acetylcholine receptors, triggering dopamine release and alertness.
5. Caffeine increases alertness by blocking:
C. Adenosine
Explanation: Adenosine normally promotes sleepiness. Caffeine acts as an antagonist, blocking these receptors and preventing the feeling of drowsiness.
6. Open Response: Mechanism & Effect
Sample Response
"Drugs can mimic neurotransmitters or block receptors. For example, alcohol enhances the action of GABA, an inhibitory chemical. This leads to slowed reaction times and impaired coordination because the brain's signals are being dampened."
Scoring Rubric
2 pts: Accurate mechanism + correct short-term effect for a specific substance.1 pt: Only one part (mechanism or effect) is correct.0 pts: Neither part is correct or missing. Neural Research Template Worksheet Neural Research Template
Stay Sharp • Extension Project
Researcher:
Date:
Project Objective
Select a lesser-known substance (e.g., LSD, Psilocybin, Ketamine, GHB) and research its specific impact on neural communication. Focus on which receptors it targets and the resulting physiological changes.
Laboratory File
1. Substance Name
2. Chemical Classification
(e.g., Stimulant, Depressant, Hallucinogen)
3. Primary Target Receptors
4. Neurotransmitter Impact
5. Short-Term Behavioral Changes
6. Long-Term Neurological Risks
7. Summary / Key Finding
Sources / Citations 
