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":9024,"series_id":38,"theme_id":38},"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":"发布于 2021-03-23","current_time":1736105978,"font_name":"","rcmd_meipian":0,"hide_article_link":0,"from_wechat":false,"topk_keywords":[{"name":"显微镜","score":0.405519},{"name":"学生","score":0.208119},{"name":"凸透镜","score":0.204157},{"name":"物体","score":0.199323},{"name":"倍数","score":0.157531},{"name":"放大","score":0.110941},{"name":"观察","score":0.101026},{"name":"简易","score":0.091963},{"name":"放大镜","score":0.084117},{"name":"放得","score":0.077298}],"music_name":"","origin_status":0,"password_v2":"","font_id":0,"title_style":"","rich_text_title":"","enable_download":1,"cover_thumb":"https://ss-mpvolc.meipian.me/users/359277596/7a6c180f530e44b3a00ce9d31c5a13ff__jpeg.heic","has_video":false,"gift_switch":1,"enable_watermark":2,"content":{"article_id":273338043,"content":[{"source":0,"source_platform":"local","splicing_template_id":0,"text":"
本课是《微小世界》单元第四课的内容,重点是知道两个凸透镜组合起来可以使物体的图像放得更大,然后尝试用自制的显微镜观察周围的物体。教材一共安排了两个活动:第一部分是“做个简易显微镜”,首先提出怎样把物体放得更大的问题,引起学生思考,然后启发学生用两个放大倍数不同的凸透镜组合起来观察物体,放大倍数会大大提高;第二部分是显微镜的发展,主要介绍显微镜的发展史。
","type":1},{"img_height":2000,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/7a6c180f530e44b3a00ce9d31c5a13ff__jpeg.heic","img_width":2666,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"实验材料:倍数不同的放大镜片
使用说明:实践出真知,基于学情分析,大多数学生已经知道用两个放大倍数不同的凸透镜组合起来观察物体,放大倍数会大大提高。所以把放大镜片提供给学生,就能达到比较理想的教学目标。
材料建议:增加可以固定两个凸透镜的装置,并可以上下移动调节两个凸透镜之间的距离。
","type":1},{"source_platform":"local","subtitle_align":"center","subtitle_color":"#ffffff","subtitle_font_size":"medium","subtitle_style_id":9,"text":"做一个简易显微镜","type":6},{"img_height":468,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/4a4097d106204e1a890dc7e4a42f6712__jpeg.heic","img_width":668,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"在前几课的学习过程中,我发现很多学生也曾将两把放大镜重叠去观察物体,希望获得更大的图像,当时的这种行为是无意识的,是不知其所以然的。所以对学生的基本学情必须掌握,在此基础上本节课我大胆放手,留给学生充足的探究时间。
","type":1},{"img_height":466,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/154d2b99daa845939ca7989243d56f45__png.heic","img_width":674,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"靠近眼睛的凸透镜我们称它为:目镜,靠近物体的凸透镜我们称它为:物镜。为将要学到的显微镜结构名称做铺垫。
","type":1},{"img_height":2000,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/85468d8feeb9473199cb3512072d2c95__jpeg.heic","img_width":2666,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"认真观察的他们……
","type":1},{"img_height":2000,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/5625d1c071e64003b7f7ad6a625f587e__jpeg.heic","img_width":2666,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"img_height":2666,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/2aa9fa8d1d8d4ec3a773862cb2e9b84e__jpeg.heic","img_width":2000,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"瞧,小组成员之间相互配合。
","type":1},{"img_height":1170,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/499ef4f3-459c-40da-9af3-a6a3048ad4c8__jpg.heic","img_width":1200,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"在利用自制简易显微镜观察过程中,学生也遇到了一些问题,如小组的成员都聚到一块,光线太暗,物体看不清楚。我也把握住了教学时机,及时反馈给学生一些解决问题的建议。结合五年级学过的光的反射知识,利用手电筒或镜子,将足够的光反射到物体上,这样看上去就更清楚了。给同学解决困难的同时也为下节课介绍显微镜的结构、使用原理等做下铺垫,使学生深刻体会到,有充足的光线照射和正确的调焦,对于用显微镜看清物体是非常重要的,一举两得。
","type":1},{"source_platform":"local","subtitle_align":"center","subtitle_color":"#ffffff","subtitle_font_size":"medium","subtitle_style_id":9,"text":"显微镜的发展","type":6},{"img_height":438,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/c3e754efa90243dfbb0ac1ac64227857__png.heic","img_width":624,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"1.介绍各种显微镜
(1)最早的光学显微镜:荷兰詹森父子制作的显微镜才是世界上第一架真正的显微镜。
(2)电子显微镜:放大倍数可达200万倍。
(3)扫描隧道显微镜:放大倍数可达3亿倍。
","type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"在学习教材资料《列文虎克发现微生物的故事》时我穿插了德育渗透,告诉他们人类的智慧以及科技发展对社会的正向推动作用,这时学生眼睛充满的是对科学家的崇拜。
","type":1},{"img_height":1200,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/3c85f6f2-eaaf-4924-8658-766f395b8726__jpg.heic","img_width":1200,"source":1,"source_platform":"local","splicing_template_id":204,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"青苔看起来好像绿茸茸的“地毯”,在显微镜下看简直就像一片丛林。
","type":1},{"img_height":528,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/4d41f93f-cf48-49fa-9545-d67f96c47d0a__jpg.heic","img_width":1200,"source":1,"source_platform":"local","splicing_template_id":1003,"type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/065c3ea7-df3b-4bd6-a4f5-be66ca5b949a__jpg.heic","img_width":1200,"source":1,"source_platform":"local","splicing_template_id":208,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"在彩色电子显微镜下的一只热带毛毛虫的头部和一只胡蜂的头部。
","type":1},{"img_height":282,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/fd5a1602e0fa4848915293307e443032__jpeg.heic","img_width":892,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"SARS病毒🦠
","type":1},{"img_height":502,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/cd912f295e1e41b3977649ea236cdbfe__png.heic","img_width":904,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"授人以鱼不如授人以渔,课上不仅仅是讲知识,更需要解惑,对学生进行情感的熏陶,充分调动他们的主观能动性,给予他们想象空间和创新意识,这节课学生听的入神,我也很有成就感,相信科学的份量愈来愈重。不足的是没有让学生制作成型的简易显微镜。
","type":1}]},"ext":{"id":213760617,"article_id":273338043,"ip":"111.17.161.10","origin_status":0,"edit_from":0,"client_type":1,"password_v2":"","uv":1,"font_id":0,"title_style":"","rich_text_title":null,"gift_switch":1,"deleted_at":0,"recycle_expired_at":0,"share_with_nickname":2,"enable_watermark":2,"music_id":0,"music_source":-1,"_auto_update_time":"2022-09-02 22:33:00"},"extend":{"id":32047441,"article_id":273338043,"enable_download":1,"cover_width":0,"cover_height":0}},"author":{"id":359277596,"nickname":"科学课堂反思","head_img_url":"https://ss-mpvolc.meipian.me/users/359277596/c0ec709c-6a35-4653-a580-7d0e4abf2d1f.jpg","column_visit":71,"signature":"","favorite_count":0,"follow_count":3,"follower_count":80,"famous_type":0,"autoplay_music":1,"text_preference":1,"client_type":1,"reward_word":"如果喜欢我的作品,请打赏鼓励哦!","member_type":0,"wechat_id":"","country":"","province":"","city":"","career":null,"birthday":0,"gender":0,"reg_time":1615018441,"e_id":"","bedge_img":"","label_img":"","review_level":1,"enable_reward_switch":false,"enable_water_mark_switch":0,"plainNickname":"科学课堂反思","member_status":0,"member_img":"","ext":null,"phone_num":"135****5151","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":"681f195468ed38d4ebb51f4948191562","im_id":"","yx_im_token":"","last_visit_time":1675155738,"ip_address":"223.104.2.147","device_id":"565dcaec710b4a279e006c39f1ef4120","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":"0.0000000","latitude":"0.0000000","last_client_type":1,"level":0,"province_user":"","city_user":"","user_id":359277596,"qq_id":"","apple_id":"","badge_img_url":"","reward_url":"https://www.meipian.cn/wap/reward/view/index.html?mask_id=3hkiew6m&author_user_id=359277596&article_title=%E7%A7%91%E5%AD%A6%E8%AF%BE%E5%A0%82%E5%8F%8D%E6%80%9D%EF%BC%9A1-4%E6%80%8E%E6%A0%B7%E6%94%BE%E5%BE%97%E6%9B%B4%E5%A4%A7","memo_name":""},"content":[{"source":0,"source_platform":"local","splicing_template_id":0,"text":"本课是《微小世界》单元第四课的内容,重点是知道两个凸透镜组合起来可以使物体的图像放得更大,然后尝试用自制的显微镜观察周围的物体。教材一共安排了两个活动:第一部分是“做个简易显微镜”,首先提出怎样把物体放得更大的问题,引起学生思考,然后启发学生用两个放大倍数不同的凸透镜组合起来观察物体,放大倍数会大大提高;第二部分是显微镜的发展,主要介绍显微镜的发展史。
","type":1},{"img_height":2000,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/7a6c180f530e44b3a00ce9d31c5a13ff__jpeg.heic","img_width":2666,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"实验材料:倍数不同的放大镜片
使用说明:实践出真知,基于学情分析,大多数学生已经知道用两个放大倍数不同的凸透镜组合起来观察物体,放大倍数会大大提高。所以把放大镜片提供给学生,就能达到比较理想的教学目标。
材料建议:增加可以固定两个凸透镜的装置,并可以上下移动调节两个凸透镜之间的距离。
","type":1},{"source_platform":"local","subtitle_align":"center","subtitle_color":"#ffffff","subtitle_font_size":"medium","subtitle_style_id":9,"text":"做一个简易显微镜","type":6},{"img_height":468,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/4a4097d106204e1a890dc7e4a42f6712__jpeg.heic","img_width":668,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"在前几课的学习过程中,我发现很多学生也曾将两把放大镜重叠去观察物体,希望获得更大的图像,当时的这种行为是无意识的,是不知其所以然的。所以对学生的基本学情必须掌握,在此基础上本节课我大胆放手,留给学生充足的探究时间。
","type":1},{"img_height":466,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/154d2b99daa845939ca7989243d56f45__png.heic","img_width":674,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"靠近眼睛的凸透镜我们称它为:目镜,靠近物体的凸透镜我们称它为:物镜。为将要学到的显微镜结构名称做铺垫。
","type":1},{"img_height":2000,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/85468d8feeb9473199cb3512072d2c95__jpeg.heic","img_width":2666,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"认真观察的他们……
","type":1},{"img_height":2000,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/5625d1c071e64003b7f7ad6a625f587e__jpeg.heic","img_width":2666,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"img_height":2666,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/2aa9fa8d1d8d4ec3a773862cb2e9b84e__jpeg.heic","img_width":2000,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"瞧,小组成员之间相互配合。
","type":1},{"img_height":1170,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/499ef4f3-459c-40da-9af3-a6a3048ad4c8__jpg.heic","img_width":1200,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"在利用自制简易显微镜观察过程中,学生也遇到了一些问题,如小组的成员都聚到一块,光线太暗,物体看不清楚。我也把握住了教学时机,及时反馈给学生一些解决问题的建议。结合五年级学过的光的反射知识,利用手电筒或镜子,将足够的光反射到物体上,这样看上去就更清楚了。给同学解决困难的同时也为下节课介绍显微镜的结构、使用原理等做下铺垫,使学生深刻体会到,有充足的光线照射和正确的调焦,对于用显微镜看清物体是非常重要的,一举两得。
","type":1},{"source_platform":"local","subtitle_align":"center","subtitle_color":"#ffffff","subtitle_font_size":"medium","subtitle_style_id":9,"text":"显微镜的发展","type":6},{"img_height":438,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/c3e754efa90243dfbb0ac1ac64227857__png.heic","img_width":624,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"1.介绍各种显微镜
(1)最早的光学显微镜:荷兰詹森父子制作的显微镜才是世界上第一架真正的显微镜。
(2)电子显微镜:放大倍数可达200万倍。
(3)扫描隧道显微镜:放大倍数可达3亿倍。
","type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"在学习教材资料《列文虎克发现微生物的故事》时我穿插了德育渗透,告诉他们人类的智慧以及科技发展对社会的正向推动作用,这时学生眼睛充满的是对科学家的崇拜。
","type":1},{"img_height":1200,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/3c85f6f2-eaaf-4924-8658-766f395b8726__jpg.heic","img_width":1200,"source":1,"source_platform":"local","splicing_template_id":204,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"青苔看起来好像绿茸茸的“地毯”,在显微镜下看简直就像一片丛林。
","type":1},{"img_height":528,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/4d41f93f-cf48-49fa-9545-d67f96c47d0a__jpg.heic","img_width":1200,"source":1,"source_platform":"local","splicing_template_id":1003,"type":1},{"img_height":900,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/065c3ea7-df3b-4bd6-a4f5-be66ca5b949a__jpg.heic","img_width":1200,"source":1,"source_platform":"local","splicing_template_id":208,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"在彩色电子显微镜下的一只热带毛毛虫的头部和一只胡蜂的头部。
","type":1},{"img_height":282,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/fd5a1602e0fa4848915293307e443032__jpeg.heic","img_width":892,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"SARS病毒🦠
","type":1},{"img_height":502,"img_url":"https://ss-mpvolc.meipian.me/users/359277596/cd912f295e1e41b3977649ea236cdbfe__png.heic","img_width":904,"source":0,"source_platform":"local","splicing_template_id":0,"type":1},{"source":0,"source_platform":"local","splicing_template_id":0,"text":"授人以鱼不如授人以渔,课上不仅仅是讲知识,更需要解惑,对学生进行情感的熏陶,充分调动他们的主观能动性,给予他们想象空间和创新意识,这节课学生听的入神,我也很有成就感,相信科学的份量愈来愈重。不足的是没有让学生制作成型的简易显微镜。
","type":1}],"mark":0,"gift":{"icon":"https://ss2.meipian.me/app/article_gift_flower_icon_v2.png","amount":0,"mix_icon":"","mix_persent":0,"display":1},"topic":{"has_vote":0,"vote_rank":0,"vote_count":0},"visitor":{"is_share":false,"visitor_id":0,"visitor_user_id":null,"from":null,"channel":null,"theme":null,"in_app":false,"from_web":false,"self_view":false,"timestamp":null,"sign":null,"is_from_app_launch":null,"show_praise":null,"praised":null,"wechat_sign":null,"token":null,"password_v2":null,"visitor_open_id":null,"share_depth":"","visitor_union_id":null,"ua_source":"web","mpuuid":"","isFan":0,"relation_type":0,"member_status":0,"member_img":"","head_attach_img":"","headwear":null,"request":{"attributes":{},"request":{},"query":{},"server":{},"files":{},"cookies":{},"headers":{}},"is_new_guest":0,"first_share_uid":0,"risk_cheat_info":"","is_cheat_risk":false,"page_visit_id":"PC_866386899677adffa0f8e42.34312868","is_good":null,"auth_url":null,"from_auth_callback":0},"watermark":"?watermark/3/image/aHR0cDovL3N0YXRpYzItc3JjLml2d2VuLmNvbS9sb2dvd2F0ZXIucG5n/dy/50/text/QCDnp5Hlrabor77loILlj43mgJ0=/fontsize/320/dx/10/dy/30/fill/I0ZGRkZGRg==/text/576O56-H5Y-377yaMzU5Mjc3NTk2/fontsize/320/dx/10/dy/10/fill/I0ZGRkZGRg=="}; var detail = ARTICLE_DETAIL; window.model = { detail: ARTICLE_DETAIL }