| Lesson Plan |
| Grade: |
Date: 25/02/2026 |
| Subject: Biology |
| Lesson Topic: describe the behaviour of chromosomes in plant and animal cells during meiosis and the associated behaviour of the nuclear envelope, the cell surface membrane and the spindle (names of the main stages of meiosis, but not the sub-divisions of prophase |
Learning Objective/s:
- Describe the behavior of chromosomes during each main stage of meiosis in plant and animal cells.
- Explain the changes to the nuclear envelope, cell surface membrane, and spindle apparatus across meiosis I and II.
- Compare and contrast spindle formation and cytokinesis mechanisms in plant versus animal meiosis.
- Predict the outcome of errors in chromosome segregation on gamete chromosome number.
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Materials Needed:
- Projector or interactive whiteboard
- PowerPoint slides with meiosis diagrams
- Handouts summarizing chromosome, nuclear envelope, membrane, and spindle changes
- Microscopy images or virtual lab of plant and animal meiotic cells
- Whiteboard and markers
- Exit ticket cards
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Introduction:
Begin with a quick animation showing a cell dividing, asking students what they notice about the chromosomes. Recall that previous lessons covered mitosis and the purpose of reducing chromosome number for sexual reproduction. Explain that today they will track how chromosomes, the nuclear envelope, the cell membrane, and the spindle behave through meiosis in both plant and animal cells. Success will be measured by their ability to label each stage correctly on a diagram.
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Lesson Structure:
- Do‑now (5') – students label a blank meiosis diagram from memory (retrieval practice). Teacher circulates.
- Direct instruction (10') – present PowerPoint covering the eight main stages, focusing on chromosome condensation, nuclear envelope breakdown/re‑formation, membrane status, and spindle differences (plant vs animal).
- Guided practice (12') – using a comparative table, groups fill in the behavior of each structure for each stage; teacher checks understanding with clicker questions.
- Interactive simulation (10') – students explore a virtual lab with microscopy images of plant and animal meiosis, identify key events, and answer embedded questions.
- Consolidation activity (8') – each group creates a two‑panel storyboard (plant vs animal) illustrating one stage (e.g., Metaphase I) and presents the differences.
- Formative check (5') – quick exit ticket: write the stage where the nuclear envelope reforms and describe one difference in cytokinesis between plant and animal cells.
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Conclusion:
Review the sequence of meiotic stages and the coordinated changes of chromosomes, nuclear envelope, membrane, and spindle. Highlight how plant and animal cells achieve the same goal with different spindle origins and cytokinesis mechanisms. Collect exit tickets as a retrieval check and assign a worksheet to label a full meiosis diagram for homework.
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