Unit2 cross -curricular connection学案2026-2027学年沪教版七年级英语上册

七年级上册 U2 School life U2 cross-curricular connection学案 2026-2027学年沪教版七年级英语上册 班级 __________ 姓名 __________ 日期 __________ 课型：跨学科探究　教材：p.32 Technology　建议课时：40分钟 本课要解决的问题 Why must we keep the stick and the marks in the same places? 学完能做到：解释日晷的基本组成；排列制作步骤；用光影观察检验自己的想法。 学习重点与难点：分清需要改变和保持不变的条件；用观察支持结论。 一 先读懂这个计时工具 6分钟 T1 Read Sundials on p.32. Complete the explanation. A sundial uses the __________ of a stick to show the time. It needs __________. Match the parts and their jobs. Part Job 1. A stick A. Help us read the hour. 2. Hour marks B. Makes a shadow when light shines on it. 3. A watch during making C. Gives the correct clock time for each new mark. Answers: 1—______ 2—______ 3—______ 关键词 shadow 影子；tip 末端；mark 标记；position 位置；keep … still 保持……不动。 二 在实验前说出自己的猜想 5分钟 T2 What may happen if we move the light but keep the stick still? My prediction: The shadow will ______________________________________. What may happen if we move the stick after making the hour marks? I think __________________________________________________________. 三 从说明中找出不可跳过的步骤 6分钟 T3 Read steps a–e on p.32. Write the correct order. ______ → ______ → ______ → ______ → ______ Circle the warning that tells you what must stay still. Why is it needed? ______________________________________________________________________________________ 跨学科探究 用光影检验猜想 四 课堂光影小实验 10分钟 T4 Use a pencil fixed upright in clay, a sheet of paper and a torch. If there is only one torch, watch the teacher’s demonstration and record individually. 1. Mark the pencil position on the paper. Keep the pencil and paper still. 2. Shine the torch from one side. Draw the shadow and label it A. 3. Move only the torch to another position. Draw the new shadow and label it B. 4. Compare the direction and length of the two shadows. 注意：灯光不照眼睛。这个模型只用于观察光影变化，不能直接读出真实时间。 What changes What stays the same ________________________________ ________________________________ Sketch your observation. Mark the pencil, torch positions, shadow A and shadow B. 我的观察图 I notice _________________________________________________________. This supports / does not support my prediction because ____________________. 五 为证据留一点余地 Did we measure the time with our torch model? ______ What can we conclude from this experiment? Tick the careful answer. □ Changing the light position can change a shadow. □ Our model proves that a real sundial is correct on every day of the year. 跨学科探究 排查问题并设计验证 六 给日晷找出问题 8分钟 T5 Suggest one fix for each problem. Use words from the text when helpful. Problem A possible fix A student moves the bucket after marking “9”. ________________________________ ________________________________ Clouds hide the sun; the shadow is unclear. ________________________________ ________________________________ A student writes the hours without checking a watch. ________________________________ ________________________________ Can a sundial replace every clock in school? Give one reason for your answer. ______________________________________________________________________________________ 七 写出怎样检验它 5分钟 T6 Complete a short plan. This outdoor task takes place after class on a sunny day; it is not a task to finish within this lesson. First, we choose a sunny place and fix the stick. We keep __________________ still. At 9:00 and 10:00, we check a __________ and mark the __________ of the shadow. To test the sundial, we compare its reading with ___________________________. 课后记录表 教师安排固定安全场地；没有条件时，只完成检验方案。 Clock time Where the shadow points Clear enough to read? ____________ ________________________ Yes / No ____________ ________________________ Yes / No 离堂解释 用2句英文回答本课问题。 We must keep the stick and marks in the same places because ________________. If we move them, ___________________________________________________. 结论提醒 根据观察说“在这些条件下……”。不要把一次成功写成“永远准确”。 跨学科探究参考答案 cross-curricular connection学案参考答案 T1 shadow；sunlight / sunshine。匹配1—B，2—A，3—C。制作时手表用于校准小时标记；之后可将影子位置与标记比较，估读时间。 T2 合理预测：The shadow will change its direction or length. 移动棍子后，影子与原标记的对应关系可能改变。预测阶段不判唯一答案，要求实验后回看。 T3 c → e → a → d → b。关键警告为“Don’t move the bucket!”；固定位置才能把不同时刻的影子标记放在同一参照下比较。 T4 改变的是torch position；保持不变的是pencil position、paper position及铅笔竖直状态。观察图须画出同一铅笔位置、两个光源位置和相应影子。 观察示例：The shadow points in a different direction when we move the torch. 实际长度变化以现场观察为准；不要求每次同时看到方向和长度改变。 模型没有测真实时间，选第一项。它支持“光源位置改变可使影子变化”，不能证明户外日晷全年都准确。 T5 ①若能准确放回原位和方向，先恢复并核对；否则重新定位、按手表时间重做标记。②等阳光充足、影子清楚时再读数，或使用钟表。③用手表核对实际时间，重新校准标记。 日晷不能代替学校里所有钟表：夜间没有太阳光，阴天可能没有清楚的影子；其使用条件也会限制读数。答出一项合理限制即可。 T6 the stick and the base / paper；watch；tip；a watch / a clock。验证时须保留原位置与方向，比较日晷读数和钟表读数，并记录是否一致。 离堂解释示例：We must keep the stick and marks in the same places because the marks match the shadow positions. If we move them, the sundial may show the wrong time. 第 页 学科网（北京）股份有限公司 $