Unit 7 Focusing on culture学案 2026-2027学年沪教版八年级英语上册

U7 文化探究课学案 2026—2027学年沪教版八年级英语上册 The secret of memory 班级 姓名 日期 教材对接:pp. 110—111 建议课时:40分钟 本课探究:How can trees help us read the past without telling us every detail? 学习目标:理解年轮作为历史证据的作用;区分观察与推断;结合自然与人类历史写一则有证据的展品说明。 一 树的记忆是什么 4分钟 1. Look at the title “The memories of trees”. Do you expect trees to remember in the same way as people? Write your prediction, then check it after reading. My prediction: 二 阅读一份自然档案 9分钟 Read pp.110—111. Find which evidence helps scientists answer each question. Use the word bank when needed. 词语支架:ring 年轮;pattern 分布模式;narrow 狭窄的;scar 伤痕;climate 气候;evidence 证据;figure out 弄清楚。 问题 文中证据或方法 2. How old is the tree? Scientists . 3. What were growing conditions like? They study the of rings. 4. Was there possibly a forest fire? They look for . 5. What can wood tell us about human history? Ring patterns can help date . Ring chemistry can help find . 6. Why does the writer begin with a question and end by saying trees cannot talk? A. To make the scientific explanation more engaging. B. To prove that trees have human minds. C. To persuade readers to cut down more trees. My evidence: 三 年轮证据能说到哪一步 12分钟 Use this classroom model. The outer ring is known to be from 2025, and no rings are missing. Ring 1 is the oldest. 本题为简化教学模型,不是真实测量记录。 Ring number Width Other evidence 1 wide none 2 wide none 3 narrow none 4 narrow a dark scar 5 wide none 6 wide outer ring: 2025 7. What year does Ring 4 represent? Show how you counted. 8. Write O for an observation(直接观察)or I for an inference(依据证据推断). (1) Ring 3 is narrower than Ring 2. (2) The tree may have grown less well in the year of Ring 3. (3) There is a dark scar on Ring 4. (4) A fire may have happened in the year of Ring 4. 9. Which claim is stronger than the evidence allows? Explain. A. Ring 4 contains a dark scar. B. The scar may be a sign of a forest fire. C. Ring 4 proves the fire began at three o’clock on a Friday. 10. Scientists compare trees from the same area. Why is this better than using only one tree? Suggest one other type of evidence they could check. 四 从自然线索走向历史解释 11分钟 Read this short research note alongside the final part of p.110. Research note: A study of wood from a Norse site in Canada dated the cutting of the trees to AD 1021. This supports the conclusion that Norse people were active there in that year. It does not, by itself, date the beginning of the whole settlement. 读懂范围:date在这里作动词,表示“确定年代”;settlement 聚落。证据支持“当年有人活动”,不等于证明“整个村落就在那年开始建造”。 11. Choose the more careful museum label and improve it with one piece of evidence. A. This wood proves that every building here was built in 1021. B. This wood provides evidence of Norse activity here in 1021. 12. Imagine a local museum in Guangzhou is displaying a fallen tree section beside an old wooden object. Write a 50—70-word label. Explain what rings can show, how they connect nature with human history, and one limit of the evidence. Do not invent the object’s age. 表达支架:These rings are a record of … / By comparing …, scientists can … / This may suggest … / However, the rings alone cannot tell us … 五 出口任务 4分钟 13. Complete: Trees do not remember as people do. Their rings . 14. A classmate says, “Let’s cut a branch to collect evidence.” Suggest a way to investigate without damaging a living tree. 课后观察:寻找一件能留下过去痕迹的物品,如旧照片、日记或修补过的器物。记录“可见证据”和“仍不知道的事”各一条。 参考答案与证据辨析 1. 示例:The title may mean that tree rings keep a record of the past. Trees do not remember events in the human sense. 标题中的memory为比喻。 2. count the rings to estimate / tell the tree’s age。课堂按教材每年形成一轮的模型理解;真实研究还需识别缺轮等问题,不机械处理所有树种。 3. widths / patterns。宽窄能提供生长环境的线索。回答不应扩大为“单个窄轮能精确证明当年降雨量”。 4. a black area / a dark scar on a ring。文中用usually表达常见解释,不是无条件断言。 5. old buildings;when the tree was cut down。教材把木材信息与人类历史相联系。日期结论的具体边界在第11题进一步讨论。 6. A。开头问题制造悬念,结尾回应标题,帮助读者把“不会说话的树”与“可读取的历史记录”联系起来。 7. 2023。最外侧第6轮是2025,第5轮是2024,第4轮是2023。须采用题目“外轮已确定年份且无缺轮”的条件,不用当前年份替换2025。 8. (1) O;(2) I;(3) O;(4) I。看见的是宽窄或伤痕,生长状况和火灾原因是依据这些现象作出的解释。 9. C。年轮资料不能给出起火的具体钟点与星期。可答:The ring cannot show the exact time or day of the fire. 10. 示例:Several trees can show whether a pattern is shared across the area or only found in one tree. Scientists could also check local weather records, written records or other physical evidence. 回答只需提出合理的互证思路。 怎样判断学生真的理解了 若学生只会说“narrow means dry”,追问:“Could something else affect growth?” 不要求掌握全部树木学知识,而是看能否从绝对判断改成“may suggest”并主动寻找其他证据。 第7题考数序与年份对应;第8—10题考科学解释的边界。答对年份不意味着已经会评估证据,应分别观察。 参考答案与文化表达评价 11. B。补充示例:Scientists dated the cutting of the trees to 1021 by studying the wood. This supports evidence of activity in that year, but it does not prove when every building was built. 用“证据支持到哪一步”帮助学生精读,避免将年代推断无限扩大。 12. 示例约61词:These rings are a record of the tree’s growth. Wide and narrow rings give clues about past growing conditions. Scientists can compare ring patterns in trees and old wooden objects to learn about nature and human history. However, rings alone cannot tell us who used this object or exactly why every ring looks different. We need other evidence to complete the story. 13. record growth and give us clues about the past / can preserve evidence of past conditions。14. Use a photograph, a model, a museum sample or an existing fallen tree section. 不要求学生采集活树组织。 维度 达成表现 分值 信息 说明年轮至少两项用途 0—2 联系 解释自然证据如何帮助研究人类历史 0—2 审慎 写出一项真实限制,不凭空断言 0—2 表达 标签清楚易懂,符合篇幅 0—2 Unit 7 | 文化探究课学案 | 学科网(北京)股份有限公司 $