Substance Basics Intro

Grade Level

Grade 7 (Age 12-13)

Duration

30 minutes

Class Size

30 students

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Unit Title

Understanding Substance Impact – Unit 1 of 4

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California Content Standards Alignment

• CA Health Education Content Standards (2015)

  • Standard 1.HC.1: Students demonstrate the ability to access valid health information and products and services.
  • Standard 2.HD.1: Students analyse how body systems function and relate to personal health.
  • Standard 3.HS.1: Students understand how individual, family, and community health are interconnected.
  • Standard 6.HR.1: Students demonstrate effective interpersonal communication and refusal skills to enhance health.

• CA Common Core ELA (Grades 6-8)

  • Speaking & Listening: SL.7.1 (Engage effectively in collaborative discussions)
  • Reading Informational Text: RI.7.1 (Cite textual evidence to support analysis)

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Lesson Title

Introduction to Substances: What Are They?

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Learning Objectives

By the end of this lesson, students will be able to:

1. Define "substance" in the context of health and identify three common types: smoking (tobacco), alcohol, and cannabis.
2. Categorise substances as legal or illegal for their age group and understand basic effects on health.
3. Recognise common societal misconceptions about these substances through group discussion.
4. Build foundational understanding that sets up deeper exploration in the unit.

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Materials Required

• Whiteboard and markers
• Sticky notes (3 different colours)
• Index cards with substance categories and facts (smoking, alcohol, cannabis)
• Projector or printed visual aids (diagrams of body impact, prevalence statistics)
• Timer

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Lesson Structure

1. Hook / Set Induction (5 minutes)

• Activity: Start by writing the word “Substances” on the board. Ask students:
  “What comes to mind when you hear the word ‘substances’?”
• Students write their thoughts on sticky notes and place them on the board.
• Briefly scan responses aloud, highlighting common ideas and misconceptions (e.g., “Only bad stuff,” “Medicines,” “Smoking,” “Drugs”).
• Explain: “Today we’ll start by learning what substances mean in health, especially smoking, alcohol, and cannabis.”

2. Direct Instruction (7 minutes)

• Define Substance: Any chemical or material that people consume or use that can change how their body or mind works.
• Introduce the three target substances:
  • Smoking (tobacco): Legal for adults, highly addictive, harms lungs and heart.
  • Alcohol: Legal for adults, impacts brain and liver, affects judgment and behaviour.
  • Cannabis: Mixed legality (legal for adults in CA but illegal under federal law), affects brain function and reaction time.
• Present a simple diagram showing how these substances affect the brain and body.
• Share key facts about how common these substances are among youth and adults in California (e.g., percentage of teens who have tried them, normalising trends).

3. Collaborative Group Discussion (10 minutes)

• Divide the class into 6 groups of 5 students.
• Each group receives a set of index cards — some with common misconceptions (e.g., “Smoking is only harmful when you smoke a lot,” “Alcohol helps you solve problems,” “Cannabis isn’t addictive”), others with facts.
• Groups sort cards into Myths and Truths and prepare to explain their reasoning.
• After 7 minutes, groups share their top 2 myths and truths with the entire class.
• Teacher facilitates by correcting misunderstandings gently and encouraging students to think critically about what society often assumes.

4. Student Reflection and Wrap-Up (5 minutes)

• Students individually write on a sticky note one thing new they learned and one question they still have about substances.
• Collect notes anonymously to guide next lessons and address misconceptions.
• Quickly summarise with an encouraging message:
  “Understanding substances isn’t about scaring anyone — it’s about knowing the facts so you can make healthy choices. We’ll explore these ideas more in the next lessons.”

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Assessment

• Formative: Observation of group discussions and sorting task for understanding of myths/facts.
• Exit Slip: Student reflections and questions.

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Differentiation Strategies

• Provide written and visual materials to support diverse learning styles, including ELL students.
• Use small groups for peer support.
• Encourage participation through different roles (note taker, presenter, sorter).

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Extension Ideas

• Assign students to interview a family member about their family’s views on substances to share in the next class.
• Create a mini-poster summarising myths vs facts as a graphic organiser.

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Teacher’s Notes

• Emphasise a non-judgemental tone to encourage open discussion.
• Remember that cultural and familial attitudes about substances vary widely; respect student backgrounds.
• Highlight that cannabis is legal for adults over 21 in CA but still illegal federally and for minors, reinforcing legal age restrictions clearly.

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This concise but interactive lesson will build a solid foundation for the Understanding Substance Impact unit while aligning with California health education standards and preparing students for responsible decision-making.