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小学科学三下《制作小磁针》趣味课件PPT

  • 2026-04-09 10:02:18
小学科学三下《制作小磁针》趣味课件PPT

小学科学三下《制作小磁针》趣味课件PPT

📂【配套资料】小学科学三下《制作小磁针》课件+教案

趣味化情境设计 —— 课件创设了 “小磁针工坊” 主题情境，让学生化身 “小工匠”，以定制小磁针任务串联知识点，调动探究兴趣，打造沉浸式科学实践课堂。

任务一：寻找合适摩擦位置（探究磁化最优部位）
任务二：确定最佳摩擦次数（探究磁化次数影响）
任务三：找准正确摩擦方向（探究磁化方向效果）

📚课件从猜想验证到对比实验，再到制作验收，层层递进教学，融入实验记录、磁极判断等内容，帮助学生掌握制作方法，让科学探究更高效！

➡️购买方式：
点击购买《制作小磁针》单课
点击购买小学科学三下全册

#小学科学 #三年级科学 #三下科学 #三年级科学备课 #小学课件研究所 #ppt课件 #小学科学备课 #小学科学老师#小学科学公开课 #公开课

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  1. CONNECT:[ UseTime:0.000805s ] mysql:host=127.0.0.1;port=3306;dbname=a_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001017s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000480s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000633s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000969s ]
  6. SELECT * FROM `set` [ RunTime:0.000412s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000993s ]
  8. SELECT * FROM `article` WHERE `id` = 487070 LIMIT 1 [ RunTime:0.000777s ]
  9. UPDATE `article` SET `lasttime` = 1775895559 WHERE `id` = 487070 [ RunTime:0.008499s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.001190s ]
  11. SELECT * FROM `article` WHERE `id` < 487070 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001477s ]
  12. SELECT * FROM `article` WHERE `id` > 487070 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001208s ]
  13. SELECT * FROM `article` WHERE `id` < 487070 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.003089s ]
  14. SELECT * FROM `article` WHERE `id` < 487070 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001571s ]
  15. SELECT * FROM `article` WHERE `id` < 487070 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.011403s ]
0.155433s