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我教Python的笨办法:从画一个正方形开始 (有课件)

  • 2026-01-29 03:35:23
我教Python的笨办法:从画一个正方形开始 (有课件)
教python 面对的都还是零基础的学生。
让他们喜欢编程，从画图开始。
正方形  到   五角星  到  正多边形  到花瓣 到  花朵。
1、我们从一个简单的正方形开始：（顺序结构）
发现什么规律了吗？
同样的两行代码重复了四次！
 2、for 循环，它让重复变得简单（循环结构）
3、探索五角星和多边形

掌握了循环后，学生们开始尝试画五角星。

带学生推导正多边形的通用公式：循环 n 次，每次转动 360/n 度。

4、创造迷宫和螺旋线

有了变量和循环的概念，学生们开始创作更复杂的图形。

5、为世界添加颜色

6、列表，颜色的循环变化，理解 % 运算符的妙用。

7、创作一朵六瓣花

先画一个花瓣，然后重复六次。（循环的嵌套）

8、学生创作

没有模板，没有限制，只有孩子们天马行空的想象力。

我是一个一线的信息教师，热爱生活，希望和同行们多多交流！

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我四十岁了，还是一名信息技术教师
信息科技教师需要与职称和解
不做“后排”的信息科技教师：学会放大自身影响力
顺序、选择、循环——我们的一生
做信息科技老师，这样的时刻就觉得很值
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【内推】python开发、产品经理(应届可投)

看完这几页,你的Python就牛了哦

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  140. /yingpanguazai/ssd/ssd1/www/f.mffb.com.cn/vendor/topthink/think-trace/src/Html.php ( 4.42 KB )
  1. CONNECT:[ UseTime:0.000369s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000480s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.008527s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.009167s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000630s ]
  6. SELECT * FROM `set` [ RunTime:0.001943s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000584s ]
  8. SELECT * FROM `article` WHERE `id` = 467272 LIMIT 1 [ RunTime:0.004577s ]
  9. UPDATE `article` SET `lasttime` = 1770484869 WHERE `id` = 467272 [ RunTime:0.009974s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 66 LIMIT 1 [ RunTime:0.001417s ]
  11. SELECT * FROM `article` WHERE `id` < 467272 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.005112s ]
  12. SELECT * FROM `article` WHERE `id` > 467272 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.002861s ]
  13. SELECT * FROM `article` WHERE `id` < 467272 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.110759s ]
  14. SELECT * FROM `article` WHERE `id` < 467272 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.006889s ]
  15. SELECT * FROM `article` WHERE `id` < 467272 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.004185s ]
0.236235s