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Respiratory System and Cellular Respiration

📑 20 slides 👁 30 views 📅 2/4/2026 📄 PDF
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Lesson Overview

Introduction to the respiratory system and cellular respiration

Lesson Overview
2

Do Now Activity

  • Students list three main parts of the breathing system and their functions
  • Reinforces prior knowledge from the previous lesson
  • Teacher checks homework and calls the roll during this time
Do Now Activity
3

Lesson Objectives

  • Understand the parts and functions of the respiratory system
  • Learn about gas exchange in the alveoli
  • Explore how cells use oxygen and glucose for energy
Lesson Objectives
4

Key Terms Introduction

  • Keywords: Respiration, Alveoli, Gas Exchange, Glucose, Energy
  • Students read terms aloud and discuss connections to food and exercise
  • Physical flashcards used to reinforce learning
Key Terms Introduction
5

Breathing System Recap

  • Quick review of last week's content via a mindmap
  • Branches include air pathway, exercise effects, and smoking impacts
  • Students contribute ideas to build the mindmap
Breathing System Recap
6

Labeling the Respiratory Diagram

  • Students work in pairs to label an unlabelled respiratory diagram
  • Each pair places sticky notes on the correct parts and states functions
  • Teacher circulates to guide and correct misconceptions
Labeling the Respiratory Diagram
7

Correct Respiratory Diagram

  • Display the fully labeled respiratory system diagram
  • Reinforces visual learning and corrects any errors
  • Quick class checks with thumbs up/down for agreement
Correct Respiratory Diagram
8

Gas Exchange in Alveoli

  • Quick reminder of gas exchange process in alveoli
  • Oxygen moves from air into blood, CO2 moves out
  • Visual aid with simple alveoli and capillary diagram
Gas Exchange in Alveoli
9

Think-Pair-Share Activity

  • Students discuss: Where does oxygen go after entering blood?
  • Pairs share explanations linking oxygen to cellular respiration
  • Teacher builds on answers to confirm the energy production link
Think-Pair-Share Activity
10

Cellular Respiration Intro

  • Respiration compared to a recipe: ingredients, process, waste
  • Students fill in activity sheets on body's energy production
  • Key words: glucose, oxygen, energy, carbon dioxide
Cellular Respiration Intro
11

Equation Builder Activity

  • Students arrange word cards to build the respiration equation
  • Explain to partners why this reaction is vital for the body
  • Teacher checks arrangements and listens to explanations
Equation Builder Activity
12

Respiration Equation

  • Correct equation displayed: Glucose + Oxygen → CO2 + Water + Energy
  • Students copy equation and definition into their notes
  • Discussion on energy uses: movement, growth, repair, warmth
Respiration Equation
13

Video on Aerobic Respiration

  • Short video clip on basics of aerobic respiration
  • Students answer questions while watching
  • Teacher monitors to ensure focus and understanding
Video on Aerobic Respiration
14

Worksheet Quick Check

  • Students answer short questions on respiration individually
  • Includes a breathing rate calculation problem
  • Pairs compare answers for quick class discussion
Worksheet Quick Check
15

Limewater Experiment Intro

  • Purpose: Demonstrate CO2 production in respiration
  • Safety rules: Careful handling, no ingestion, gentle blowing
  • Step-by-step instructions displayed clearly
Limewater Experiment Intro
16

Limewater Experiment Steps

  • Pour limewater into test tube, insert straw, blow gently
  • Observe milky change indicating CO2 presence
  • Early finishers repeat after quick movement (e.g., star jumps)
Limewater Experiment Steps
17

Post-Experiment Discussion

  • Class checks: Who saw limewater turn milky? What does it prove?
  • Link CO2 production to cellular respiration and gas exchange
  • Discuss effects of exercise and smoking on respiration
Post-Experiment Discussion
18

Smoking and Respiration

  • How smoking damages alveoli and reduces gas exchange
  • Leads to less oxygen, more CO2 buildup, shortness of breath
  • Summarise: Smoking makes respiration harder
Smoking and Respiration
19

Lesson Recap

  • Exit slip: Students write 3 things learned and 1 question
  • Peer-teaching activity: Partners state key facts for outcomes
  • Homework: Complete worksheet and write up experiment
Lesson Recap
20

Conclusion and Homework

  • Summarise key points: Respiration, gas exchange, energy production
  • Homework: Worksheet and experiment write-up due next class
  • Encourage questions and further exploration of the topic
Conclusion and Homework
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