Unit Title: Micro-organisms and Their Effects on Humans

Grade Level: 7th-8th grade

Unit Overview: This unit will explore the fascinating world of micro-organisms and their impact on human health. Students will learn about different types of micro-organisms, their characteristics, and how they interact with humans. They will also investigate the positive and negative effects of micro-organisms on human health, including diseases caused by bacteria, viruses, and fungi, as well as the beneficial roles of micro-organisms in digestion, immunity, and medicine. Through hands-on activities, research, and discussions, students will develop a deeper understanding of the complex relationship between micro-organisms and humans.

Unit Duration: 4-6 weeks

Key Concepts: 1. Micro-organisms: Definition, types, and characteristics 2. Diseases caused by micro-organisms 3. Beneficial roles of micro-organisms in human health 4. Micro-organisms and immunity 5. Micro-organisms and medicine

Unit Objectives: By the end of this unit, students will be able to: 1. Define micro-organisms and identify different types. 2. Explain the characteristics and structures of bacteria, viruses, and fungi. 3. Describe the causes, symptoms, and prevention of common diseases caused by micro-organisms. 4. Analyze the positive and negative effects of micro-organisms on human health. 5. Investigate the role of micro-organisms in digestion, immunity, and medicine. 6. Conduct experiments and research to explore the impact of micro-organisms on humans. 7. Communicate findings and ideas effectively through presentations and discussions.

Assessment Methods: 1. Class discussions and debates on the positive and negative effects of micro-organisms on human health. 2. Research projects on specific diseases caused by micro-organisms, including presentations and written reports. 3. Laboratory experiments to observe the growth and effects of micro-organisms. 4. Quizzes and tests to assess understanding of key concepts and vocabulary. 5. Culminating project: Students create a visual display or infographic showcasing the beneficial roles of micro-organisms in human health.

Unit Outline:

Week 1: - Introduction to micro-organisms: Definition, types, and characteristics - Micro-organisms and their structures: Bacteria, viruses, and fungi - Classifying micro-organisms: Prokaryotes vs. eukaryotes

Week 2: - Diseases caused by micro-organisms: Bacterial, viral, and fungal infections - Case studies: Investigating specific diseases and their impact on humans - Prevention and control measures for common diseases

Week 3: - Beneficial roles of micro-organisms in human health: Digestion and gut microbiota - The immune system and micro-organisms: Pathogens vs. beneficial bacteria - Research project on a specific beneficial micro-organism

Week 4: - Micro-organisms and medicine: Antibiotics, vaccines, and antifungal treatments - Ethical considerations in using micro-organisms for medical purposes - Laboratory experiment: Observing the effects of antibiotics on bacteria

Week 5: - Micro-organisms and immunity: The role of micro-organisms in developing immunity - Herd immunity and vaccination - Research project on a specific vaccine and its impact on public health

Week 6: - Culminating project: Creating a visual display or infographic showcasing the beneficial roles of micro-organisms in human health - Presentations and class discussions on the importance of micro-organisms in human well-being - Unit review and assessment

Note: The duration and specific activities can be adjusted based on the available class time and resources.