Lesson Plan

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Lesson Plan
Grade: Date: 18/01/2026
Subject: Chemistry
Lesson Topic: Interpret data, including graphs, from rate of reaction experiments
Learning Objective/s:
  • Describe how concentration, temperature, surface area and catalysts affect reaction rate.
  • Calculate the average rate of reaction from volume‑time or mass‑time data.
  • Interpret straight‑line graphs to determine reaction rate and explain the significance of the gradient.
  • Predict how changes in experimental conditions will alter the shape of a rate graph.
Materials Needed:
  • Projector and screen
  • Whiteboard and markers
  • Printed data tables and graph paper
  • Stopwatch or timer
  • Gas syringe / pre‑prepared gas‑evolution data
  • Calculator
  • Worksheets with practice questions
 Introduction:
Begin with a brief demonstration of a gas‑evolving reaction to capture interest. Review the definition of reaction rate and the formula Δ[ A ]/Δt. Explain that today’s success criteria are to calculate rates from tables, draw and interpret volume‑time graphs, and predict the effect of variables on the gradient.
Lesson Structure:
  1. Do‑now (5') – Quick quiz on factors influencing reaction rate.
  2. Mini‑lecture (10') – Review rate definition, formula, and calculation from data.
  3. Guided practice (15') – Work through the sample H₂ volume‑time table, calculate the average rate, and sketch the graph.
  4. Group activity (20') – Using provided data sets, calculate rates, draw graphs, and answer interpretation questions (e.g., effect of temperature, catalyst).
  5. Class discussion (10') – Groups share findings; teacher highlights correct use of gradient and common misconceptions.
  6. Exit ticket (5') – Each student writes one prediction of how a variable changes the graph gradient.
Conclusion:
Recap that the gradient of a volume‑time graph represents the reaction rate and that altering conditions changes this gradient. Collect exit tickets to check understanding. For homework, assign additional rate‑calculation and graph‑interpretation questions.