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Notice: Undefined index: SHOPUSER in /home/wwwroot/zhaizhaolei123/wwwroot/product/view.php on line 16

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Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/view.php on line 31

Notice: Undefined index: prohistoy in /home/wwwroot/zhaizhaolei123/wwwroot/product/view.php on line 32
<br /> <b>Warning</b>: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in <b>/home/wwwroot/zhaizhaolei123/wwwroot/product/view.php</b> on line <b>40</b><br /> 【打包下载】苏教版七年级下册生物PPT课件公开课视频教案导学案试题练习 - 3A备课网
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3A备课网


Warning: Use of undefined constant bh - assumed 'bh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 20


Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 73
【打包下载】苏教版七年级下册生物PPT课件公开课视频教案导学案试题练习


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Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 26

  • Warning: Use of undefined constant pf1 - assumed 'pf1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 78

    Warning: Use of undefined constant pf2 - assumed 'pf2' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 78

    Warning: Use of undefined constant pf3 - assumed 'pf3' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 78
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  • Warning: Use of undefined constant ifwap - assumed 'ifwap' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 82
  • 扫一扫,手机访问

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本站优惠价

Warning: Use of undefined constant ifuserdj - assumed 'ifuserdj' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 115
14.90

Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 118

Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 118
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原价:
Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 119
14.9
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  • Warning: Use of undefined constant kcnum - assumed 'kcnum' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 126
    2326511

  • Warning: Use of undefined constant xsnum - assumed 'xsnum' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 127
    379

Warning: Use of undefined constant yhxs - assumed 'yhxs' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 133

Warning: Use of undefined constant bh - assumed 'bh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 155

Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 26
  • 套餐

  • Warning: Use of undefined constant bh - assumed 'bh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 163

    Warning: Use of undefined constant fhxs - assumed 'fhxs' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 164

    Warning: Use of undefined constant kcnum - assumed 'kcnum' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 164

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 165

    Warning: Use of undefined constant userid - assumed 'userid' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant probh - assumed 'probh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant userid - assumed 'userid' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant probh - assumed 'probh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 169

    Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money2 - assumed 'money2' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money2 - assumed 'money2' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170
    常规课
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    Warning: Use of undefined constant kcnum - assumed 'kcnum' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 164

    Warning: Use of undefined constant userid - assumed 'userid' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant probh - assumed 'probh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant userid - assumed 'userid' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant probh - assumed 'probh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 169

    Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money2 - assumed 'money2' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money2 - assumed 'money2' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170
    公开课
    Warning: Use of undefined constant fhxs - assumed 'fhxs' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 164

    Warning: Use of undefined constant kcnum - assumed 'kcnum' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 164

    Warning: Use of undefined constant userid - assumed 'userid' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant probh - assumed 'probh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 166

    Warning: Use of undefined constant userid - assumed 'userid' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant probh - assumed 'probh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 167

    Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 169

    Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money2 - assumed 'money2' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money1 - assumed 'money1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170

    Warning: Use of undefined constant money2 - assumed 'money2' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 170
    常规课+公开课

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Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 179

Warning: Use of undefined constant bh - assumed 'bh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 179

Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 26

Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 179

Warning: Use of undefined constant bh - assumed 'bh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 179

Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 26

Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 179

Warning: Use of undefined constant bh - assumed 'bh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 179

Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 26

  • Warning: Use of undefined constant ifxj - assumed 'ifxj' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 210
    立即购买
    Notice: Undefined index: SHOPUSER in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 215
    加入购物车
    Warning: Use of undefined constant ysweb - assumed 'ysweb' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 221
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    Warning: Use of undefined constant fhxs - assumed 'fhxs' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 234
    自动发货
    Warning: Use of undefined constant ifuserdj - assumed 'ifuserdj' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 235
担保交易,安全保证,有问题不解决可申请退款。

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  • 分享

  • Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 247

    Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 248

    Warning: Use of undefined constant bh - assumed 'bh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 249

    Warning: Use of undefined constant upty - assumed 'upty' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 285

    Warning: Use of undefined constant tp - assumed 'tp' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 286

Warning: Use of undefined constant xinyong - assumed 'xinyong' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 260

Warning: Use of undefined constant userid - assumed 'userid' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 260

Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 191


Warning: Use of undefined constant shopname - assumed 'shopname' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 266
清扬教育

  • 信誉:
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  • Warning: Use of undefined constant nc - assumed 'nc' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 268
    清扬教育
  • 宝贝:

  • Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 269

    Warning: Use of undefined constant id - assumed 'id' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 26
    861件
  • 创店:

  • Warning: Use of undefined constant sj - assumed 'sj' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 270
    2016-07-25

Warning: Use of undefined constant uqq - assumed 'uqq' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 271

Warning: Use of undefined constant weixin - assumed 'weixin' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 274

Warning: Use of undefined constant baomoney - assumed 'baomoney' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 277
  • 描述

    Warning: Use of undefined constant pf1 - assumed 'pf1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 281
    5.00
  • 发货

    Warning: Use of undefined constant pf2 - assumed 'pf2' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 282
    5.00
  • 售后

    Warning: Use of undefined constant pf3 - assumed 'pf3' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 283
    5.00

Warning: Use of undefined constant dqsj - assumed 'dqsj' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/function.php on line 466

Warning: Use of undefined constant type1 - assumed 'type1' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 204

Warning: Use of undefined constant aurl - assumed 'aurl' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 212

Warning: Use of undefined constant tit - assumed 'tit' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 212

Warning: Use of undefined constant addir - assumed 'addir' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 212

Warning: Use of undefined constant bh - assumed 'bh' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 212

Warning: Use of undefined constant jpggif - assumed 'jpggif' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/config/return.php on line 212
购买方法

    Warning: Use of undefined constant tysx - assumed 'tysx' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 349

    Notice: Undefined offset: 2 in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 354

Warning: Use of undefined constant txt - assumed 'txt' (this will throw an Error in a future version of PHP) in /home/wwwroot/zhaizhaolei123/wwwroot/product/default/viewmb.php on line 372

 

 

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部分教案展示

第三节   感知信息

教学目标:

1、说出眼的基本结构和视觉形成的过程

2、说出耳的基本结构和听觉形成的过程

3、说出人体皮肤的感觉

4、养成良好的用眼、用耳习惯

教学重点:

   1、说出眼的基本结构和视觉形成的过程

   2、调查近视形成的原因,并提出预防近视的对策

   3、说出耳的基本结构和听觉形成的过程

   4、说出人体皮肤的感觉功能

教学难点:

    1、说出眼的基本结构和视觉形成的过程

2、说出耳的基本结构和听觉形成的过程

    3、探究人体皮肤的感觉功能

教学方法:讨论法、引导探究法

以学生自主学习、互助学习为主,辅以教师的讲解、演示、指导。

课时安排:2课时

教学设计:

   (第一课时)

(一)导入:创设情景,展示秀丽的山水风光图画,吸引学生的注意力,导入新课,眼睛对于人体来说非常重要。我们每位同学都有一双美丽的眼睛,但是,你知道这双美丽的眼睛内部是什么样的吗?你又是怎样通过眼睛观察到外界事物的呢?同学们想知道吗?让我们带着这些问题开始今天的学习。

(二)新课学习

师:每个人都有爱美之心,平时我们经常照照镜子。但是,当你们在照镜子的时候,你发现镜子中的眼睛具有什么特点吗?
  生:外面有眼睑、睫毛,里面有眼球,还有肌肉等。
  师:同学们说得很好,以上同学们所提到的眼睑、睫毛、泪器、眼肌等结构都是我们从外部观察到的眼睛的一些附属结构。而它的内部是一个球体,称为眼球,它是眼睛的最主要部分。那么眼球由哪几部分结构构成,每一部分又具有什么样的功能呢?

师:展示眼球模型。下面就让我们通过实验的方法,观察这个模型,了解眼球的结构。同学们在观察的时候注意结合书中的插图,并按照书中实验的方法一步一步来完成。
    生:通过观察拆卸和组装模型了解眼球的结构,并分析、讨论、交流。
  师:同学们观察得非常细致,哪一组的同学愿意给大家介绍一下。
  各个组的同学纷纷踊跃登场,按照模型的顺序介绍眼睛的结构。(眼球分眼球壁和内容物两部分。眼球壁又分外膜、中膜和内膜三层。外膜包括前面的角膜和后面的巩膜。中膜包括前部的虹膜、稍后部的睫状体、后部的脉络膜。内膜是视网膜。内容物包括房水、晶状体和玻璃体。)

师:眼球到底是怎样形成物像的?视觉如何形成?
    生:讨论,分析,交流

师:如果对于一个正常的眼球来说,外界物体反射的光线都能在视网膜上形成一个清晰的物像。但是,在生活中,由于有些人具有一些不良的行为习惯或不注意用眼卫生,遗传等因素造成了眼部的一些疾病,近视和远视就是最常见的两种类型。
  课前我要求同学们调查你所接触的环境中患近视眼的情况,不知同学们调查的怎么样了,请各个小组来汇报一下。
    师:同学们表现得非常好,都认真地完成了老师交给的任务。通过调查,我们发现,随着年龄的增长和学习压力的增大,患近视的人数越来越多。那么,近视眼和远视眼到底是怎样形成的呢?应该如何进行矫正呢? 
   选择一至两名患有近视或远视的同学谈感想)

生:讨论,交流

(第二课时)

1、教师演示:耳的结构(挂图或模型)
  2、学生自主学习:引导学生观察挂图或模型,让学生自主看书学习,找出自己不懂的问题并记录下来。学生看书过程中,教师巡视,督促学生把问题记下来。

3、分组互助学习: 组内交流问题、解决问题,并把组内不能解决的问题记录下来。
  4、全班互助学习: 每小组依次提出本组不能解决的问题,让其他组的同学帮助解答。为了调动学生解答问题的积极性,可采取小组竞答的方式,答对1题小组加10分,看哪一个小组回答问题最多、准确率最高。同时为了鼓励小组提出问题,凡是提出一个有价值的问题,就加20

5、分组完成拼图游戏:教师分发耳的结构拼图,讲清游戏规则。按拼图的快慢顺序分别给小组加不同的分数。先拼起的小组优先观察耳的结构模型,看完后依次往后传。
喜欢游戏是孩子的天性。适时创设游戏这一环节,会激发学生极大的学习热情,同时可调节学生的情绪,活跃课堂气氛。
  6、活动:进行听力测试 

7、教师引导学生梳理并复习已学内容,并进行对比,找出规律,为学生学习、理解听觉的形成这一重点、难点打下基础。
  复习以下知识:
  刺激感受器传入神经元神经中枢传出神经元效应器
  光线视觉神经视觉中枢(位于大脑皮层)形成视觉
  然后让学生分组归纳总结出:
  声波外耳道鼓膜听小骨耳蜗(内有听觉感受器)与听觉有关的神经听觉中枢(位于大脑皮层)产生听觉
  8、每小组选出一名代表到黑板上用简短文字和箭头表示出听觉的形成过程。全体学生共同评出优胜者,并给优胜者所在的小组加分

师生交流:听觉的形成
  声波外耳道鼓膜听小骨耳蜗(内有听觉感受器)→与听觉有关的神经听觉中枢(位于大脑皮层)→产生听觉

9、皮肤的感觉功能:探究:手皮肤的触压觉 

   学生4人一组,尝试提出有关手皮肤感觉方面的问题,并进行探究

  师:讨论:每个同学手皮肤的感觉敏感部位完全相同吗?

  生:通过实验探究,亲身体会,交流看法

(一)   课堂小结:

通过本节课的学习,你懂得了哪些方面的知识?有什么感想?今后如何去做呢?请同学们畅所欲言――激发了学生珍惜健康的美好情感。

(四)自我评价  1234   思维拓展

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  • 商品评价
  • 描述相符

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    5
  • 发货速度

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    5
  • 服务态度

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    5
  • 综合评分

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    5
  • 写评价赚积分

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  • 交易规则

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