工作就用美篇工作版","guide_search_desc":"海量模板范文,一键做同款 工作就用美篇工作版","img_beautify_switch":0,"ad_free":0,"text_direction":"1","template":{"id":9243,"series_id":35,"theme_id":35},"container":{},"redirect":{"redirect_type":1,"img_url":false,"link_url":"/wap/downloadpage/backpage","button_bg_color":false,"button_desc":false,"redirect_desc":false},"edit_date_str":"更新于 2020-09-26","current_time":1744202451,"font_name":"","rcmd_meipian":0,"hide_article_link":0,"from_wechat":false,"topk_keywords":[{"name":"公顷","score":0.593584},{"name":"面积","score":0.343904},{"name":"测量","score":0.312169},{"name":"平方米","score":0.266476},{"name":"足球场","score":0.260582},{"name":"金秋","score":0.171707},{"name":"我们","score":0.140719},{"name":"教室","score":0.137982},{"name":"大厅","score":0.127372},{"name":"大约","score":0.122448}],"content":{"article_id":248469724,"content":[{"source":0,"text":"
金秋的阳光,温馨恬静,金秋的微风和煦温柔,金秋的蓝天白云飘逸,金秋的田野遍地金黄。
在这个宜人的季节,我们开始了四年级数学实践活动“认识公顷”——了解一公顷有多大。
时间:2020年9月26日
地点:阳光花园小区、播州区第一小学。
参与人员:杨彦溪、颜凡云、陈圣博、杨应豪。
主题:认识公顷面积。
","type":1},{"img_height":1600,"img_size":441,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/07d1d27a3c1e5cda5759799320c8d50c__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"
出发之前,先预习一下课本上的公顷知识。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMDdkMWQyN2EzYzFlNWNkYTU3NTk3OTkzMjBjOGQ1MGNfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":395,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/69ee94b89649da668942a764596095ab__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"首先,我和同学颜凡云先来到楼下的大厅测量一下大厅的面积是多少?
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjllZTk0Yjg5NjQ5ZGE2Njg5NDJhNzY0NTk2MDk1YWJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":393,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/6235375af4761398fedb01d7928a5585__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjIzNTM3NWFmNDc2MTM5OGZlZGIwMWQ3OTI4YTU1ODVfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":364,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/b591c4f2e6573603352f762d6c65375a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"我们测量出长约7米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvYjU5MWM0ZjJlNjU3MzYwMzM1MmY3NjJkNmM2NTM3NWFfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":410,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/8d7866d0d4c2ccfd8491124584220a89__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"测量出宽约6米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvOGQ3ODY2ZDBkNGMyY2NmZDg0OTExMjQ1ODQyMjBhODlfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":463,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/24624fee22417b176972b4398cac7ba1__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMjQ2MjRmZWUyMjQxN2IxNzY5NzJiNDM5OGNhYzdiYTFfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":326,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/af4dab483130cabbc7fe9b074a648ed9__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvYWY0ZGFiNDgzMTMwY2FiYmM3ZmU5YjA3NGE2NDhlZDlfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":456,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/853c4e82d3c488356dedeeb9f1e0603a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvODUzYzRlODJkM2M0ODgzNTZkZWRlZWI5ZjFlMDYwM2FfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":351,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/63a9c1f218a19f2f004669a58dab9acc__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"长方形的面积=长*宽,由此得出,这个大厅的面积大约42平方米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjNhOWMxZjIxOGExOWYyZjAwNDY2OWE1OGRhYjlhY2NfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"source":0,"text":"通过预习课本知识,我知道了1公顷=10000平方米。那么我们测量的小区的大厅大约需要250个这么大的面积才有1公顷。
","type":1},{"img_height":1600,"img_size":591,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/87b0bbf7f735968839b60326677d5bf2__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"接着,我和班上的同学一起来到了我们学校的操场,一起测量足球场的面积。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvODdiMGJiZjdmNzM1OTY4ODM5YjYwMzI2Njc3ZDViZjJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":674,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/5ec8df2a030602f2d246bf101c42db02__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"我们四个同学分工合作,先固定好起点。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNWVjOGRmMmEwMzA2MDJmMmQyNDZiZjEwMWM0MmRiMDJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":469,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/f2d917081327508c765452052ced4068__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"我固定好中间。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvZjJkOTE3MDgxMzI3NTA4Yzc2NTQ1MjA1MmNlZDQwNjhfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":735,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/61a80bb725f8ab15e88012b18cf9ac8f__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"一起看看测量的数字是多少。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjFhODBiYjcyNWY4YWIxNWU4ODAxMmIxOGNmOWFjOGZfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":773,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/0240372bd1c2a062bc98a4381e234a4a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"足球场的长超出了我们带的皮尺的长度,我们带的皮尺总长度只有30米,所以我们只有通过二次测量才能测量出足球场总的长度。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMDI0MDM3MmJkMWMyYTA2MmJjOThhNDM4MWUyMzRhNGFfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":657,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/8ee02877c66942cd7395361f9502d36e__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvOGVlMDI4NzdjNjY5NDJjZDczOTUzNjFmOTUwMmQzNmVfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":799,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/ef1552582a4d3fe95574042e27548444__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvZWYxNTUyNTgyYTRkM2ZlOTU1NzQwNDJlMjc1NDg0NDRfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":738,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/073c158cd9f9c7370cf5fa3db028f3cd__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMDczYzE1OGNkOWY5YzczNzBjZjVmYTNkYjAyOGYzY2RfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":792,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/9237c5a016495d691d2c48ec179554dc__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"足球场的总长度约48米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvOTIzN2M1YTAxNjQ5NWQ2OTFkMmM0OGVjMTc5NTU0ZGNfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":751,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/2c70f896fdeea84b15884d46e18096a8__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"然后我们开始测量宽的长度。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMmM3MGY4OTZmZGVlYTg0YjE1ODg0ZDQ2ZTE4MDk2YThfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":750,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/64a5e2a9688f53123c8cbf0ff80cf3c9__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjRhNWUyYTk2ODhmNTMxMjNjOGNiZjBmZjgwY2YzYzlfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":898,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/35e4724380bd02882f156651b6c29e02__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMzVlNDcyNDM4MGJkMDI4ODJmMTU2NjUxYjZjMjllMDJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":591,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/cde3138650c01383764f7206dd1123a3__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"宽的长度约27米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvY2RlMzEzODY1MGMwMTM4Mzc2NGY3MjA2ZGQxMTIzYTNfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":902,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/c888fe1ed5ca71bc9bdd4d10aa147db6__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"由此得出,足球场的面积约1300平方米。那么根据公式1公顷=10000平方米,大约7个足球场的面积才有1公顷。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvYzg4OGZlMWVkNWNhNzFiYzliZGQ0ZDEwYWExNDdkYjZfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":410,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/a574f4a604da0627283193fa005d355d__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"最后,我们又来到教室测量。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvYTU3NGY0YTYwNGRhMDYyNzI4MzE5M2ZhMDA1ZDM1NWRfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":447,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/14a34e1980070ed593a9894abdb5510f__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"教室的长约8米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMTRhMzRlMTk4MDA3MGVkNTkzYTk4OTRhYmRiNTUxMGZfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":435,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/14c955fac82a9418616a593431dd28ce__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"宽约6米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMTRjOTU1ZmFjODJhOTQxODYxNmE1OTM0MzFkZDI4Y2VfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":420,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/d0e9b979cfb288735afd74d909bd3c0b__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvZDBlOWI5NzljZmIyODg3MzVhZmQ3NGQ5MDliZDNjMGJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":474,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/2e9c4a78a88228f87b27b8087ef8ab07__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"教室的面积约48平方米,那么大约200个教室的面积才有1公顷。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMmU5YzRhNzhhODgyMjhmODdiMjdiODA4N2VmOGFiMDdfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":721,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/e8d5c84068218002c5ec37ed96b53bbf__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"通过这次实践活动,我认识到生活中处处有数学,只有体验过,才会发现和思考。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvZThkNWM4NDA2ODIxODAwMmM1ZWMzN2VkOTZiNTNiYmZfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"source":0,"text":"实践总结:
1.1公顷的含义。
边长是100米的正方形土地的面积是1公顷。
2.公顷与平方米之间的进率。
因为边长是100米的正方形的面积是100*100=10000(平方米),所以1公顷=10000平方米。
3.1公顷的大小。
400米跑道围起来的部分的面积大约是1公顷。
4.测量土地面积,可以用“公顷”作单位。
5.边长100米的正方形土地的面积是1公顷,1公顷=10000平方米。
金秋的阳光,温馨恬静,金秋的微风和煦温柔,金秋的蓝天白云飘逸,金秋的田野遍地金黄。
在这个宜人的季节,我们开始了四年级数学实践活动“认识公顷”——了解一公顷有多大。
时间:2020年9月26日
地点:阳光花园小区、播州区第一小学。
参与人员:杨彦溪、颜凡云、陈圣博、杨应豪。
主题:认识公顷面积。
","type":1},{"img_height":1600,"img_size":441,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/07d1d27a3c1e5cda5759799320c8d50c__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"
出发之前,先预习一下课本上的公顷知识。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMDdkMWQyN2EzYzFlNWNkYTU3NTk3OTkzMjBjOGQ1MGNfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":395,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/69ee94b89649da668942a764596095ab__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"首先,我和同学颜凡云先来到楼下的大厅测量一下大厅的面积是多少?
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjllZTk0Yjg5NjQ5ZGE2Njg5NDJhNzY0NTk2MDk1YWJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":393,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/6235375af4761398fedb01d7928a5585__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjIzNTM3NWFmNDc2MTM5OGZlZGIwMWQ3OTI4YTU1ODVfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":364,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/b591c4f2e6573603352f762d6c65375a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"我们测量出长约7米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvYjU5MWM0ZjJlNjU3MzYwMzM1MmY3NjJkNmM2NTM3NWFfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":410,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/8d7866d0d4c2ccfd8491124584220a89__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"测量出宽约6米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvOGQ3ODY2ZDBkNGMyY2NmZDg0OTExMjQ1ODQyMjBhODlfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":463,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/24624fee22417b176972b4398cac7ba1__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMjQ2MjRmZWUyMjQxN2IxNzY5NzJiNDM5OGNhYzdiYTFfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":326,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/af4dab483130cabbc7fe9b074a648ed9__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvYWY0ZGFiNDgzMTMwY2FiYmM3ZmU5YjA3NGE2NDhlZDlfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":456,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/853c4e82d3c488356dedeeb9f1e0603a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvODUzYzRlODJkM2M0ODgzNTZkZWRlZWI5ZjFlMDYwM2FfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":351,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/63a9c1f218a19f2f004669a58dab9acc__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"长方形的面积=长*宽,由此得出,这个大厅的面积大约42平方米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjNhOWMxZjIxOGExOWYyZjAwNDY2OWE1OGRhYjlhY2NfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"source":0,"text":"通过预习课本知识,我知道了1公顷=10000平方米。那么我们测量的小区的大厅大约需要250个这么大的面积才有1公顷。
","type":1},{"img_height":1600,"img_size":591,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/87b0bbf7f735968839b60326677d5bf2__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"接着,我和班上的同学一起来到了我们学校的操场,一起测量足球场的面积。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvODdiMGJiZjdmNzM1OTY4ODM5YjYwMzI2Njc3ZDViZjJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":674,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/5ec8df2a030602f2d246bf101c42db02__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"我们四个同学分工合作,先固定好起点。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNWVjOGRmMmEwMzA2MDJmMmQyNDZiZjEwMWM0MmRiMDJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":469,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/f2d917081327508c765452052ced4068__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"我固定好中间。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvZjJkOTE3MDgxMzI3NTA4Yzc2NTQ1MjA1MmNlZDQwNjhfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":735,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/61a80bb725f8ab15e88012b18cf9ac8f__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"一起看看测量的数字是多少。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjFhODBiYjcyNWY4YWIxNWU4ODAxMmIxOGNmOWFjOGZfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":773,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/0240372bd1c2a062bc98a4381e234a4a__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"足球场的长超出了我们带的皮尺的长度,我们带的皮尺总长度只有30米,所以我们只有通过二次测量才能测量出足球场总的长度。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMDI0MDM3MmJkMWMyYTA2MmJjOThhNDM4MWUyMzRhNGFfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":657,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/8ee02877c66942cd7395361f9502d36e__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvOGVlMDI4NzdjNjY5NDJjZDczOTUzNjFmOTUwMmQzNmVfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":799,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/ef1552582a4d3fe95574042e27548444__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvZWYxNTUyNTgyYTRkM2ZlOTU1NzQwNDJlMjc1NDg0NDRfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":738,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/073c158cd9f9c7370cf5fa3db028f3cd__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMDczYzE1OGNkOWY5YzczNzBjZjVmYTNkYjAyOGYzY2RfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":792,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/9237c5a016495d691d2c48ec179554dc__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"足球场的总长度约48米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvOTIzN2M1YTAxNjQ5NWQ2OTFkMmM0OGVjMTc5NTU0ZGNfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":751,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/2c70f896fdeea84b15884d46e18096a8__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"然后我们开始测量宽的长度。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMmM3MGY4OTZmZGVlYTg0YjE1ODg0ZDQ2ZTE4MDk2YThfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":750,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/64a5e2a9688f53123c8cbf0ff80cf3c9__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvNjRhNWUyYTk2ODhmNTMxMjNjOGNiZjBmZjgwY2YzYzlfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":898,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/35e4724380bd02882f156651b6c29e02__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMzVlNDcyNDM4MGJkMDI4ODJmMTU2NjUxYjZjMjllMDJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":591,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/cde3138650c01383764f7206dd1123a3__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"宽的长度约27米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvY2RlMzEzODY1MGMwMTM4Mzc2NGY3MjA2ZGQxMTIzYTNfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":902,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/c888fe1ed5ca71bc9bdd4d10aa147db6__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"由此得出,足球场的面积约1300平方米。那么根据公式1公顷=10000平方米,大约7个足球场的面积才有1公顷。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvYzg4OGZlMWVkNWNhNzFiYzliZGQ0ZDEwYWExNDdkYjZfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":410,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/a574f4a604da0627283193fa005d355d__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"最后,我们又来到教室测量。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvYTU3NGY0YTYwNGRhMDYyNzI4MzE5M2ZhMDA1ZDM1NWRfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":447,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/14a34e1980070ed593a9894abdb5510f__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"教室的长约8米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMTRhMzRlMTk4MDA3MGVkNTkzYTk4OTRhYmRiNTUxMGZfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":435,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/14c955fac82a9418616a593431dd28ce__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"宽约6米。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMTRjOTU1ZmFjODJhOTQxODYxNmE1OTM0MzFkZDI4Y2VfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":420,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/d0e9b979cfb288735afd74d909bd3c0b__jpg.heic","img_width":1200,"is_origin":false,"source":0,"type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvZDBlOWI5NzljZmIyODg3MzVhZmQ3NGQ5MDliZDNjMGJfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":474,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/2e9c4a78a88228f87b27b8087ef8ab07__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"教室的面积约48平方米,那么大约200个教室的面积才有1公顷。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvMmU5YzRhNzhhODgyMjhmODdiMjdiODA4N2VmOGFiMDdfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"img_height":1600,"img_size":721,"img_url":"https://ss-mpvolc.meipian.me/users/47082011/e8d5c84068218002c5ec37ed96b53bbf__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"通过这次实践活动,我认识到生活中处处有数学,只有体验过,才会发现和思考。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDcwODIwMTEvZThkNWM4NDA2ODIxODAwMmM1ZWMzN2VkOTZiNTNiYmZfX2pwZy5oZWlj/nickname/bA==/userid/NDcwODIwMTE=/sign/f1b69f71cff1b393df31c728ed30b17b"},{"source":0,"text":"实践总结:
1.1公顷的含义。
边长是100米的正方形土地的面积是1公顷。
2.公顷与平方米之间的进率。
因为边长是100米的正方形的面积是100*100=10000(平方米),所以1公顷=10000平方米。
3.1公顷的大小。
400米跑道围起来的部分的面积大约是1公顷。
4.测量土地面积,可以用“公顷”作单位。
5.边长100米的正方形土地的面积是1公顷,1公顷=10000平方米。