Unit4 cross-curricular connection学案2026-2027学年沪教版七年级英语上册

七年级上册 Unit 4 The Earth | 跨学科 U4 跨学科探究学案 2026—2027学年沪教版七年级英语上册 班级 __________ 姓名 __________ 日期 __________ 本课任务：读懂空气与风的文字，通过观察收集证据，并用英语说明一个发现。 学习重点：区分观察与解释。学习难点：让实验结论不超出证据。课前准备：薄纸条、硬纸板、透明杯、纸巾和一盆水。 一 看不见就是不存在吗 3分钟 “There is nothing in this empty cup.” Do you agree? Write a prediction. I think _________________________________________________________. 二 从诗歌与说明文找信息 8分钟 Air Air has no smell. Air has no taste. But when the wind blows, you feel it on your face. Look at that kite, or the plane up there. How do they stay up? They ride on the air. How does that balloon float in the sky? Well, it’s simply hot air that makes balloons fly! We need air to breathe. We need air to survive. And when we breathe it, it keeps us alive. Wind Clouds move across the sky because of the wind. These clouds can bring rain for trees and flowers. A weathercock on a building tells us where the wind is blowing from. People can use the wind to produce electricity. 材料对应教材第64页；诗歌按意义合行，Wind部分节写。词语支架：breathe 呼吸；survive 生存；weathercock 风向标；electricity 电。 1. Finish the sentences with information from the texts. a. We need air to __________, and it keeps us __________. b. Wind can move __________ and help produce __________. c. A weathercock tells us where wind is blowing __________. 2. Which text uses questions and rhyme to help us remember ideas? [ ] Air [ ] Wind My example: _________________________________ 3. The poem says air has no smell. Does smelling smoke mean “air itself smells”? My first explanation: ____________________________________________ 三 观察记录先于结论 15分钟 观察A 用纸条发现空气的运动 7分钟 Hold a paper strip by one end. Keep the centre of a card about 20 cm away. Use the same strip and keep the centre of the card in the same place. Test 1: Hold the card still for five seconds. Test 2: Fan the strip gently by turning the card from side to side for five seconds. Do not touch the strip. Repeat both tests three times. Record “moves” or “does not move”. Condition Trial 1 Trial 2 Trial 3 Card still ________ ________ ________ Card moving ________ ________ ________ 4. What did we change? __________________________________________ What did we keep the same? ______________________________________ 5. Observation: When the card moved, ______________________________. Explanation: The moving card made the __________ move. 想一想：如果开着风扇，第一组纸条也在动，还能直接比较吗？应怎样调整？ ________________________________________________________________ 观察B 倒扣杯子里有什么 8分钟 Teacher demonstration: Push dry tissue firmly into the bottom of a clear cup. Turn the cup upside down. Lower it into water with its mouth pointing straight down. Lift it straight out and check the tissue. Lower it again, tilt it underwater, and watch. 教师使用完好塑料杯；纸巾先卡紧，水深能淹过杯口；不把杯内空气主动挤出。学生在座位观察，记录实际结果。 6. Before the test, I think the tissue will be [ ] dry [ ] wet. Straight cup: tissue is __________. Tilted cup: I can see _______________. 7. Complete: There is __________ in the cup. It takes up __________. When the cup tilts, it escapes as bubbles and water can enter. 四 证据可以说明多少 9分钟 8. Label each sentence O (observation 观察), E (explanation 解释), or U (unsupported by these tests 本实验未能证明). a. I saw bubbles leave the tilted cup. ____ b. The air in the cup took up space. ____ c. Our paper-strip test proves that all wind is strong. ____ d. The tissue stayed dry when the cup went straight down. ____ 9. A pupil says, “The cup test proves that air has no smell.” Is the claim supported? Why? ________________________________________________________________ 10. Compare the two ways of describing wind. A. “The trees are waving hello.” B. “The leaves move when the wind blows.” Which is a poetic description? ____ Which describes an observation? ____ Why can both be useful? _________________________________________ 五 用英语写一则发现报告 5分钟 Choose ONE observation. Write 3–4 sentences. Separate what you saw from what you think it means. Use your actual result, even if it differs from your prediction. I wanted to find out _____________________________________________. I ______________________________________________________________. I observed ______________________________________________________. This suggests ___________________________________________________. 报告核查：[ ] 有操作 [ ] 有真实观察 [ ] 结论与证据对应 课后选做 给课文添两行 Write two simple lines about wind. Use one real observation and one image. 例：Wind moves the leaves on the tree. / They wave a little hello to me. ________________________________________________________________________ ________________________________________________________________________ 说明：诗歌可以想象；科学报告需要证据。不能通过闻或品尝未知气体来验证课文。 参考答案与实验说明 教材对应：第64页 Earth science。课堂总计40分钟；两项观察均可由教师演示，学生独立记录，不需设备或长时间分组。 1. a breathe / alive；b clouds / electricity；c from。2. Air。例：sky / fly，survive / alive，there / air。 3. 示例：No. The smell may come from smoke in the air. 诗歌描述空气本身；烟味来自混入空气的物质，闻不到异味也不能证明空气安全。 4. 改变：whether the card moves。保持：the same strip, distance and position。风扇可能使两种条件都受影响；应避开额外气流再比较。 5. 示例：the strip moved；air。纸条不动或只轻微动时，先如实记录，再检查纸条轻重、气流方向和距离。表格没有必须抄写的“标准现象”。 6. 常见结果：直立倒扣入水时纸巾保持干燥；杯子倾斜后出现气泡，水进入杯内。预测不计对错，以实际观察为准。 7. air；space。杯内原有空气占据空间，阻碍水大量进入；倾斜时空气逸出。水会略进入杯口，不能表述为“一滴水绝不进杯”。 8. a O；b E；c U；d O。d是对观察结果的陈述类别；如果实际未出现干纸巾，应照实记录，而不是改造数据。 9. No. We observed tissue, water and bubbles. We did not test smell. 该实验支持“空气占据空间”，不能据此证明空气有无气味。 10. A是诗意表达，B是观察描述。示例：A helps us imagine the scene. B tells us what happens。允许中文辅助说明。 报告示例 I wanted to find out if there was air in the cup. I watched the teacher lower the cup into water. The tissue stayed dry, and bubbles came out when the cup tilted. This suggests that air takes up space. 若纸巾湿了：The tissue got wet. The cup may have tilted too early. We need to repeat the test. 不强迫学生写出预期结果。 评价与边界 每项1分：操作说清楚；记录符合实际；观察与解释分开；结论不过度推断。纸条实验不测风速，杯子实验不证明空气成分或热气球升空原理。 风向标显示风吹来的方向，不是吹去的方向。若补充演示，只做方向判断，不引入本课证据无法支持的结论。 第 页 学科网（北京）股份有限公司 $