Unit1 Great people Cross-curricular connection Project 课件 2026-2027学年沪教版九年级英语上册

该初中英语单元复习课件围绕“伟人对社会的贡献”核心主题，以青霉素的发现为案例，通过时间线梳理（1928年发现、1940年代量产、近年超级细菌问题）、关键人物（Alexander Fleming）及核心事件（偶然发现、研发挑战、应用与影响），串联词汇学习与问题讨论，构建“科学发现-社会影响-现实反思”的知识网络。 其亮点在于融合语言能力、思维品质与学习能力的培养，如设计“小组讨论抗生素利弊”“制作伟人介绍展示”等活动，通过基础作业（复述历程、口头问答）与拓展作业（小组项目优化）实现分层教学。这不仅帮助学生巩固语言知识与科学探究逻辑，还提升批判性思维与合作能力，为教师提供系统且针对性强的复习框架。

Step 1: Warm-up & Lead-in What would happen if you got a serious infection before the 20th century? Do you know any medical breakthroughs that changed the world? 1.7.2013 ‹#› Step 2: Pre-reading accidental 偶然的 discovery 发现 lead to 导致 come back from holiday 度假回来 in large quantities 大量地 1.7.2013 ‹#› Step 2: Pre-reading Title Penicillin: an accidental discovery that changed the world Predict & Discuss How was penicillin discovered? Why is it called a world-changing discovery? 1.7.2013 ‹#› Penicillin: an accidental discovery that changed the world Many people consider the discovery of penicillin to be a major turning point in the history of the world. Before penicillin, a simple cut or insect bite could lead to serious infection and even death. Similarly, diseases caused by bacteria were likely to kill patients within weeks or even days. Doctors tried their best, but their treatments often failed and many patients died. It is hard to believe that this world-changing discovery happened by accident! In 1928, a scientist in London called Alexander Fleming came back from holiday to find his laboratory in a bit of a mess. He noticed there was mould growing in some of the laboratory dishes left lying around. As he sorted through them, he noticed something extraordinary. There were no bacteria in areas around the mould. Fleming found that a substance in the mould was killing the bacteria. He called it “penicillin” and was excited about using it to fight infections in humans. Sadly, Fleming did not have the money or equipment to develop his research further. It was only in the 1940s that scientists in the United States were able to produce penicillin in large quantities. Other antibiotics were also developed during this period. Since then, antibiotics have been widely used to treat infections. However, in recent years, some people have become infected by bacteria that are able to survive antibiotic treatments. Because of these “superbugs”, it has become clear that we cannot rely completely on antibiotics in the future. Scientists are therefore working hard to find new ways to fight infections. Step 3: While-reading Skimming Time When was penicillin discovered? Discoverer Who discovered penicillin? Key finding What was the key finding? 1.7.2013 ‹#› Step 3: While-reading Discovery Time 1928 Discoverer Alexander Fleming Key finding The mould killed bacteria. 1.7.2013 ‹#› Step 3: While-reading Complete the timeline of the development of penicillin. 1928 Alexander Fleming discovered penicillin by accident. 1940s Scientists in the US produced penicillin in large quantities. Recent Years “Superbugs” have appeared, making people realize that we cannot rely completely on antibiotics. 1.7.2013 ‹#› Step 3: While-reading Discuss the questions in groups. 1. Why was the discovery of penicillin a major turning point? Before penicillin, a simple cut or insect bite could lead to serious infection and even death. Similarly, diseases caused by bacteria were likely to kill patients within weeks or even days. Doctors tried their best, but their treatments often failed and many patients died. Penicillin changed this situation and saved millions of lives, so it became a major turning point in medical history. 1.7.2013 ‹#› Step 3: While-reading Discuss the questions in groups. 2. Why couldn’t Fleming develop his research further? Because he did not have the money or equipment. 1.7.2013 ‹#› Step 3: While-reading Discuss the questions in groups. 3. What problem are we facing with antibiotics now? In recent years, some people have become infected by bacteria that are able to survive antibiotic treatments. Because of these “superbugs”, it has become clear that we cannot rely completely on antibiotics in the future. 1.7.2013 ‹#› Step 4: Post-reading Fleming’s accidental discovery What can we learn from Fleming’s accidental discovery? We can learn that great scientific discoveries may happen by accident. We should also observe carefully and think deeply in our daily lives and studies. Using antibiotics wisely How should we use antibiotics wisely? We should not rely completely on antibiotics. We must use them properly and avoid overusing them in order to prevent the emergence of “superbugs”. 1.7.2013 ‹#› Project: Making a presentation about a great person 1. Find information about this person online or in the library. 1.7.2013 ‹#› 2. Prepare your presentation slides. Make sure you use a suitable design and layout. 3. Give your presentation in class. Vote for the presentation that impressed you most. Step 5: Summary Plot 1928: Penicillin was discovered. 1940s: Penicillin was produced in large quantities. Today: People are facing the problem of “superbugs”. What can we learn Scientific spirit: Careful observation and curiosity can lead to great discoveries. Critical thinking: We should use antibiotics wisely and avoid overusing them. 1.7.2013 ‹#› Self-assessment   评价内容 评分 (1—5) 1. 我能梳理出青霉素从发现到广泛应用的发展脉络。 1 2 3 4 5 2. 我能客观分析抗生素的利弊，并理解“超级细菌”带来的挑战。 1 2 3 4 5 3. 我能结合科学家的故事，阐述“成功”与“价值”的区别。 1 2 3 4 5 Homework 基础作业 1. 复述青霉素的发现与发展的历程，要求不少于 80 个词。 2. 口头回答以下问题： 1) Why was penicillin considered a “world-changing discovery”? 2) What are “superbugs”, and why are they a problem? 拓展作业 小组合作，完成介绍“介绍一位伟人”的展示项目。欣赏其他小组的作品，修改和丰富本小组的作品。有条件的班级可以把优秀作品真实发布在本班的公众号上。 19 Blues 143392.3 $