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":9901,"series_id":18,"theme_id":18},"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 2022-06-01","current_time":1743735730,"font_name":"FZSHJW","rcmd_meipian":0,"hide_article_link":0,"from_wechat":false,"topk_keywords":[{"name":"事件","score":0.45183},{"name":"独立","score":0.248445},{"name":"相互","score":0.233011},{"name":"思考","score":0.164699},{"name":"教研","score":0.135465},{"name":"意图","score":0.128776},{"name":"标号","score":0.123016},{"name":"设计","score":0.109603},{"name":"公式","score":0.106428},{"name":"发生","score":0.09856}],"music_name":"","origin_status":0,"password_v2":"","font_id":4,"title_style":"","rich_text_title":"","enable_download":1,"cover_thumb":"https://ss-mpvolc.meipian.me/users/48529260/d6efcefdeafbd5a18ad487fe0d55efa4__jpg.heic","has_video":false,"gift_switch":1,"enable_watermark":1,"content":{"article_id":331455089,"content":[{"audio_music_id":0,"source":0,"text":"
以研促教,共同成长。
","type":1},{"audio_music_id":0,"source":0,"text":"2022年6月1日,临近期末考试,阳泉十一中高一数学组全体成员进行了集体教研活动。
","type":1},{"audio_music_id":0,"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/48529260/d6efcefdeafbd5a18ad487fe0d55efa4__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"积极讨论
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDg1MjkyNjAvZDZlZmNlZmRlYWZiZDVhMThhZDQ4N2ZlMGQ1NWVmYTRfX2pwZy5oZWlj/nickname/6YKj5Lqb6Iqx5YS_/userid/NDg1MjkyNjA=/sign/fa7c2571f1734dad4b5a81e7565f3a14"},{"audio_music_id":0,"source":0,"text":"本次教研大家研讨了教学设计:事件的相互独立(人教A版普通高中教科书数学必修第二册第十章)。
一、教学目标
1.理解相互独立事件的概念及意义 2.能记住相互独立事件概率的乘法公式;
3.能综合运用互斥事件的概率加法公式及独立事件的乘法公式解题
二、教学重难点
1.重点:两事件相互独立的含义及公式,利用其解决实际问题。
2.难点:在实际问题中,判断两事件是否相互独立。
三、教学过程
1.温故知新回顾上节课的知识点,事件的关系与运算,引出这节课的需要思考的问题。
2.创设情境,引发思考,探究新知
思考1:
分别抛掷两枚质地均匀的硬币,A=“第一枚硬币正面朝上”,B=“第二枚硬币反面朝上”.事件A发生与否会影响事件B发生的概率吗?
【设计意图】概念不是凭空产生的,通过简单例子,让学生感受“事件互相独立”这样的情况是客观存在的,是源于实际生活的.
【数学情境】分别计算P(A),P(B),P(AB),看看它们之间有什么关系?
【设计意图】创设数学情境,通过计算这些事件的实例,让学生感受在数学学习中,从想法到实际验证的距离,培养数学核心素养,关注能力提升.
思考2:
一个袋子中装有标号分别是1,2,3,4的4个球,除标号外没有其他差异.采用有放回方式从袋中依次任意摸出两球.设A=“第一次摸到球的标号小于3”,B=“第二次摸到球的标号小于3”.事件A发生与否会影响事件B发生的概率吗?
【设计意图】
通过多个例子的展示,让学生自己摸索规律,提出自己的想法,对学习的内容有更多的思考.
问题:以上几个思考有什么共同结论?【设计意图】
让学生加深对定义的理解.思考3:
必然事件与任意事件是否相互独立? 不可能事件与任意事件是否相互独立?根据相互独立事件的定义,必然事件一定发生,不受任何事件是否发生的影响;同样,不可能事件一定不会发生,不受任何事件是否发生的影响,当然,他们也不影响其他事
【设计意图】
理解相互独立事件,培养逻辑推理素养.
思考4:
若事件A与B相互独立, 则A与B的对立事件也相互独立吗?
(1)用公式理解相互独立事件的定义.(2)如何判断事件是否相互独立.
【设计意图】
理解互相独立所表示的含义,并且在探究特例的基础上,遵循从具体到抽象的思路,形成对问题的探究思路,通过类比、联想解决类似结论.
","type":1},{"audio_music_id":0,"img_height":900,"img_size":490,"img_url":"https://ss-mpvolc.meipian.me/users/48529260/73e4a65ab209fee400cae6176fa9b910__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"各抒己见,畅所欲言。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDg1MjkyNjAvNzNlNGE2NWFiMjA5ZmVlNDAwY2FlNjE3NmZhOWI5MTBfX2pwZy5oZWlj/nickname/6YKj5Lqb6Iqx5YS_/userid/NDg1MjkyNjA=/sign/fa7c2571f1734dad4b5a81e7565f3a14"},{"audio_music_id":0,"source":0,"text":"通过这次教研,老师们将带着满满的收获,带着更多的思考,积极备战期末检测。
","type":1}]},"ext":{"id":285119944,"article_id":331455089,"ip":"124.166.242.76","origin_status":0,"edit_from":0,"client_type":2,"password_v2":"","uv":1,"font_id":4,"title_style":"","rich_text_title":"","gift_switch":1,"deleted_at":0,"recycle_expired_at":0,"share_with_nickname":1,"enable_watermark":1,"music_id":13307759,"music_source":1,"_auto_update_time":"2022-06-09 15:27:54"},"extend":{"id":88983614,"article_id":331455089,"enable_download":1,"cover_width":2667,"cover_height":2000}},"author":{"id":48529260,"nickname":"🐰🐰🐰🐱🐱🐱那些花儿","head_img_url":"https://ss-mpvolc.meipian.me/article/static/avatar.png","column_visit":11,"signature":"","favorite_count":0,"follow_count":244,"follower_count":93,"famous_type":0,"autoplay_music":1,"text_preference":1,"client_type":4,"reward_word":"如果喜欢我的作品,请打赏鼓励哦!","member_type":0,"wechat_id":"ojq1tt4HllKbhcAcUerqTWJf-m4s","country":"China","province":"Shanxi","city":"Yangquan","career":null,"birthday":0,"gender":0,"reg_time":1532922934,"e_id":"","bedge_img":"","label_img":"","review_level":1,"enable_reward_switch":false,"enable_water_mark_switch":1,"plainNickname":"那些花儿","member_status":0,"member_img":"","ext":null,"phone_num":"152****4576","head_attach_img":null,"badge":null,"onlive":false,"qualification":null,"biz_info":{"is_biz_user":false,"share_domains":[]},"headwear":{"icon":"","animation":"","config":{},"param":{}},"cover_img_url":"","weibo_id":"","vwen_id":"","im_id":"","yx_im_token":"","last_visit_time":1734856406,"ip_address":"183.202.229.221","device_id":"57df62cd7d72c98c:02:00:00:00:00:00","reviewer":0,"review_time":0,"account_state":0,"balance":0,"last_contribution_time":0,"member_expire_time":0,"member_qq_group":0,"web_has_login":0,"longtitude":"113.4201600","latitude":"37.9416350","last_client_type":0,"level":0,"province_user":null,"city_user":null,"user_id":48529260,"qq_id":"","apple_id":"","badge_img_url":"","reward_url":"https://www.meipian.cn/wap/reward/view/index.html?mask_id=489nsvu7&author_user_id=48529260&article_title=%E9%AB%98%E4%B8%80%E6%95%B0%E5%AD%A6%E7%BB%84%E5%B8%B8%E8%A7%84%E6%95%99%E7%A0%94%E6%B4%BB%E5%8A%A8","memo_name":""},"content":[{"audio_music_id":0,"source":0,"text":"以研促教,共同成长。
","type":1},{"audio_music_id":0,"source":0,"text":"2022年6月1日,临近期末考试,阳泉十一中高一数学组全体成员进行了集体教研活动。
","type":1},{"audio_music_id":0,"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/48529260/d6efcefdeafbd5a18ad487fe0d55efa4__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"积极讨论
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDg1MjkyNjAvZDZlZmNlZmRlYWZiZDVhMThhZDQ4N2ZlMGQ1NWVmYTRfX2pwZy5oZWlj/nickname/6YKj5Lqb6Iqx5YS_/userid/NDg1MjkyNjA=/sign/fa7c2571f1734dad4b5a81e7565f3a14"},{"audio_music_id":0,"source":0,"text":"本次教研大家研讨了教学设计:事件的相互独立(人教A版普通高中教科书数学必修第二册第十章)。
一、教学目标
1.理解相互独立事件的概念及意义 2.能记住相互独立事件概率的乘法公式;
3.能综合运用互斥事件的概率加法公式及独立事件的乘法公式解题
二、教学重难点
1.重点:两事件相互独立的含义及公式,利用其解决实际问题。
2.难点:在实际问题中,判断两事件是否相互独立。
三、教学过程
1.温故知新回顾上节课的知识点,事件的关系与运算,引出这节课的需要思考的问题。
2.创设情境,引发思考,探究新知
思考1:
分别抛掷两枚质地均匀的硬币,A=“第一枚硬币正面朝上”,B=“第二枚硬币反面朝上”.事件A发生与否会影响事件B发生的概率吗?
【设计意图】概念不是凭空产生的,通过简单例子,让学生感受“事件互相独立”这样的情况是客观存在的,是源于实际生活的.
【数学情境】分别计算P(A),P(B),P(AB),看看它们之间有什么关系?
【设计意图】创设数学情境,通过计算这些事件的实例,让学生感受在数学学习中,从想法到实际验证的距离,培养数学核心素养,关注能力提升.
思考2:
一个袋子中装有标号分别是1,2,3,4的4个球,除标号外没有其他差异.采用有放回方式从袋中依次任意摸出两球.设A=“第一次摸到球的标号小于3”,B=“第二次摸到球的标号小于3”.事件A发生与否会影响事件B发生的概率吗?
【设计意图】
通过多个例子的展示,让学生自己摸索规律,提出自己的想法,对学习的内容有更多的思考.
问题:以上几个思考有什么共同结论?【设计意图】
让学生加深对定义的理解.思考3:
必然事件与任意事件是否相互独立? 不可能事件与任意事件是否相互独立?根据相互独立事件的定义,必然事件一定发生,不受任何事件是否发生的影响;同样,不可能事件一定不会发生,不受任何事件是否发生的影响,当然,他们也不影响其他事
【设计意图】
理解相互独立事件,培养逻辑推理素养.
思考4:
若事件A与B相互独立, 则A与B的对立事件也相互独立吗?
(1)用公式理解相互独立事件的定义.(2)如何判断事件是否相互独立.
【设计意图】
理解互相独立所表示的含义,并且在探究特例的基础上,遵循从具体到抽象的思路,形成对问题的探究思路,通过类比、联想解决类似结论.
","type":1},{"audio_music_id":0,"img_height":900,"img_size":490,"img_url":"https://ss-mpvolc.meipian.me/users/48529260/73e4a65ab209fee400cae6176fa9b910__jpg.heic","img_width":1200,"is_origin":false,"source":0,"text":"各抒己见,畅所欲言。
","type":1,"watermark":"?meipian-watermark/bucket/ivwen/key/dXNlcnMvNDg1MjkyNjAvNzNlNGE2NWFiMjA5ZmVlNDAwY2FlNjE3NmZhOWI5MTBfX2pwZy5oZWlj/nickname/6YKj5Lqb6Iqx5YS_/userid/NDg1MjkyNjA=/sign/fa7c2571f1734dad4b5a81e7565f3a14"},{"audio_music_id":0,"source":0,"text":"通过这次教研,老师们将带着满满的收获,带着更多的思考,积极备战期末检测。
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