Lesson Plan

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Lesson Plan
Grade: Year 8 Date: 17/01/2026
Subject: Chemistry
Lesson Topic: State the word equation for photosynthesis, carbon dioxide + water $\rightarrow$ glucose + oxygen
Learning Objective/s:
  • State the word equation for photosynthesis accurately.
  • Explain how photosynthesis impacts atmospheric CO₂ levels and oxygen production.
  • Compare the word equation with the balanced molecular equation.
  • Describe the relevance of photosynthesis to air quality and climate change.
Materials Needed:
  • Projector and screen
  • Printed worksheet on photosynthesis word equation
  • Diagram of photosynthesis (sunlight, plant, CO₂, O₂, glucose)
  • Whiteboard and markers
  • Student notebooks
  • Exit‑ticket slips
 Introduction:
Begin with a quick question: How do plants help clean the air we breathe? Review that photosynthesis converts carbon dioxide into oxygen, linking it to climate. Tell students they will be able to write the correct word equation and explain its environmental significance by the end of the lesson.
Lesson Structure:
  1. Do‑now (5') – Students write what they already know about photosynthesis on sticky notes.
  2. Mini‑lecture (10') – Show diagram, discuss role in air quality, present word vs. balanced equations.
  3. Guided practice (15') – Whole‑class activity converting the word equation to a balanced equation; teacher checks understanding.
  4. Independent worksheet (10') – Students complete a worksheet writing the word equation and identifying its environmental benefits.
  5. Think‑pair‑share (5') – Students discuss why the equation matters for climate change.
  6. Exit ticket (5') – Write the word equation and one way photosynthesis improves air quality.
Conclusion:
Summarise that the word equation captures the core reactants and products of photosynthesis and its climate relevance. Collect exit tickets as a quick check of understanding. Assign homework to research another plant process that influences atmospheric gases.