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养蚕小达人:《迎接蚕宝宝的到来》课件

  • 2026-05-11 04:47:57
养蚕小达人:《迎接蚕宝宝的到来》课件

养蚕小达人：《迎接蚕宝宝的到来》课件

📖 本课是养蚕活动的起始课，是学生认识动物生命周期的起点。通过了解蚕卵如何孵化，学生将开启对动物繁殖初始阶段的认知。

🐚任务一 搭建蚕宝宝的“孵化小屋”
过让学生阅读资料卡自主总结孵化条件，培养信息提取与归纳能力。小组分工搭建小屋。锻炼学生的协作沟通能力。

🪸任务二 制定蚕的观察计划
出示观察计划模板，逐条讲解：饲养地点、食物、记录方法、观察内容。学生明确观察计划内容，记录关键信息。

🪶任务三 观察蚕卵
示范测量、称量法。解决蚕卵难以直接测量的问题，提升定量观察能力。引导学生分组设计温度组、光照组实验。让学生思考如何设置实验组、如何控制变量，锻炼逻辑推理与实验设计能力。

✨教学目标
💿【科学观念】
知道蚕卵的外部形态特征包括颜色、大小、形状等，蚕卵孵化需要适宜的温度、湿度和一定的时间。知道蚕的一生从卵开始，蚕卵里孕育着新生命，蚁蚕是由蚕卵孵化出来的。

💿【科学思维】
能基于生命体生存的基本需求（食物、水、空气、适宜的温度等），运用推理的方法推测蚕卵孵化和蚕健康生长所需的条件，并能设计验证方法检验推测的合理性。

💿【探究实践】
能用感官和工具观察蚕卵的形态，并用图画、文字记录，还能用资料收集或访谈等方式获取养蚕的知识。能制订可行的观察计划，用于记录蚕一生的生长变化。

💿【态度责任】
对饲养的蚕表现出爱心及责任心，能在课后坚持观察、记录蚕的生长变化。

#科学 #小学科学 #三下科学 #科学学习 #小学科学备课 #科学老师 #小学科学老师 #课件ppt #教学设计

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  1. CONNECT:[ UseTime:0.000362s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000642s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000261s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000280s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000487s ]
  6. SELECT * FROM `set` [ RunTime:0.000206s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000503s ]
  8. SELECT * FROM `article` WHERE `id` = 496436 LIMIT 1 [ RunTime:0.000404s ]
  9. UPDATE `article` SET `lasttime` = 1778886686 WHERE `id` = 496436 [ RunTime:0.001804s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.000242s ]
  11. SELECT * FROM `article` WHERE `id` < 496436 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.000432s ]
  12. SELECT * FROM `article` WHERE `id` > 496436 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.000992s ]
  13. SELECT * FROM `article` WHERE `id` < 496436 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.001409s ]
  14. SELECT * FROM `article` WHERE `id` < 496436 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.003144s ]
  15. SELECT * FROM `article` WHERE `id` < 496436 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.002092s ]
0.081266s