**Lesson Plan: Micro-Organisms Around Us**
**Grade Level:** Senior Secondary 1 (Grade 10)
**Subject:** Biology
**Topic:** Micro-Organisms Around Us
**Duration:** 60 minutes
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### Objectives
By the end of the lesson, students will be able to:
1. Define micro-organisms and give examples.
2. Discuss the types of micro-organisms.
3. Describe the habitats of micro-organisms.
4. Understand the roles of micro-organisms in various environments.
5. Identify and demonstrate proper hygiene practices to avoid harmful bacteria and viruses.
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### Materials Needed
- Whiteboard and markers
- Projector and computer
- Slides or videos on micro-organisms
- Prepared microscope slides with samples
- Microscopes
- Hand sanitizers
- Posters or infographics on micro-organisms
- Worksheets and handouts
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### Lesson Structure
#### Introduction (10 minutes)
1. **Greetings and Roll Call:** Quickly take attendance.
2. **Icebreaker Question:** Ask students, “Can anyone name a place where they believe micro-organisms thrive?”
3. **Hook:** Show a short video clip (2-3 minutes) highlighting various micro-organisms in different environments (e.g., yeast in bread making, bacteria in yogurt, mold on bread, etc.).
#### Direct Instruction (15 minutes)
1. **Definition and Types of Micro-organisms:**
- Define micro-organisms.
- Discuss different types: bacteria, viruses, fungi, algae, and protozoa.
2. **Habitat of Micro-organisms:**
- Explain where micro-organisms can be found: air, water, soil, inside the human body, etc.
3. **Roles of Micro-organisms:**
- Beneficial roles: nitrofication, decomposition, fermentation, etc.
- Harmful roles: disease causation, food spoilage, etc.
#### Guided Practice (15 minutes)
1. **Microscope Activity:**
- Divide students into small groups.
- Demonstrate how to use the microscope.
- Provide each group with prepared slides.
- Allow students to examine and make observations about the micro-organisms visible on their slides.
- Facilitate discussions on the shapes and structures observed.
#### Independent Practice (10 minutes)
1. **Worksheet Activity:**
- Distribute worksheets with questions related to the day’s lesson.
- Questions might include labeling diagrams, matching micro-organisms with their habitats, and multiple-choice questions on roles of micro-organisms.
#### Conclusion (8 minutes)
1. **Review and Summary:**
- Recap the key points: definition, types, habitats, and roles of micro-organisms.
- Emphasize the importance of hygiene in preventing harmful bacterial and viral infections.
2. **Q&A Session:**
- Encourage students to ask any questions they have about the topic.
#### Assignment (2 minutes)
1. **Homework:**
- Ask students to write a one-page essay on the impact of micro-organisms in a specific industry (e.g., medicine, agriculture, food production).
#### Cleanup (Optional)
- If there are materials that need to be cleaned up or returned (such as microscopes and slides), involve students in tidying up the classroom.
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### Assessment
- Active participation in discussions and activities.
- Accuracy and completeness of worksheet.
- Quality and effort in the homework essay.
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### Notes
- Adapt materials and difficulty level based on the specific needs and understanding of your students.
- Ensure to follow safety protocols while handling microscope slides and live cultures if any.
- Encourage students to discuss hygiene with family members.