| Lesson Plan |
| Grade: |
Date: 25/02/2026 |
| Subject: Biology |
| Lesson Topic: state that the strand of a DNA molecule that is used in transcription is called the transcribed or template strand and that the other strand is called the non-transcribed strand |
Learning Objective/s:
- Describe the role of the transcribed (template) strand in transcription.
- Compare the transcribed strand and the non‑transcribed (coding) strand regarding directionality and sequence.
- Explain how RNA polymerase reads the template strand to produce complementary mRNA.
- Identify the relationship between the coding strand and the resulting mRNA sequence.
- Apply this knowledge to correctly label a diagram of DNA transcription.
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Materials Needed:
- Projector and screen
- Whiteboard and markers
- Printed handouts with a transcription diagram
- DNA model kits (optional)
- Student worksheets
- Interactive online simulation (e.g., PhET)
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Introduction:
Begin with a quick poll asking students which DNA strand they think is “read” during transcription. Review prior knowledge of DNA double‑helix structure and the concept of base pairing. State the success criteria: students will be able to name and describe the template and coding strands and explain their roles.
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Lesson Structure:
- Do‑now (5'): Students complete a short quiz on DNA structure from the previous lesson.
- Mini‑lecture (10'): Explain the template vs. coding strand using a projected diagram and key terminology.
- Guided activity (12'): In pairs, students label a transcription diagram on the handout, indicating directionality and strand names.
- Whole‑class check (5'): Review the labeled diagrams, clarify misconceptions.
- Interactive simulation (8'): Students explore an online animation showing RNA polymerase moving along the template strand.
- Exit ticket (5'): Write one sentence stating which strand is used as the template and why.
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Conclusion:
Recap the distinction between the transcribed (template) strand and the non‑transcribed (coding) strand, emphasizing directionality and sequence relationships. Collect exit tickets as a retrieval check and assign a worksheet for homework that reinforces labeling and explanation of transcription steps.
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