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     </DefaultPicUrl><Intro>教材分析





教学目标

知识与技能

1．通过探究学习，理解浮力的大小等于什么
2．知道阿基米</Intro><SoftIntro2>教材分析





教学目标

知识与技能

1．通过探究学习，理解浮力的大小等于什么
2．知道阿基米德原理


过程与方法

通过几个连续的探究活动，让学生理解什么是浮力，学会探究物理问题的基本方法──实验法、推导法，熟练应用控制变量法、转换法、对比法、排除法解决不同的物理问题。


情感态度与价值观

通过探究活动的开展，让学生体会物理研究方法的多样性


教学重点

阿基米德原理的探究


教学难点
&lt;TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 336.5pt; PADDING-TOP: 0cm; BORD</SoftIntro2><SoftIntro>
    【内容简介】教材分析





教学目标

知识与技能

1．通过探究学习，理解浮力的大小等于什么
2．知道阿基米德原理


过程与方法

通过几个连续的探究活动，让学生理解什么是浮力，学会探究物理问题的基本方法──实验法、推导法，熟练应用控制变量法、转换法、对比法、排除法解决不同的物理问题。


情感态度与价值观

通过探究活动的开展，让学生体会物理研究方法的多样性


教学重点

阿基米德原理的探究


教学难点
<TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 336.5pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid w</SoftIntro><SoftIntroEncode>教材分析





教学目标

知识与技能

1．通过探究学习，理解浮力的大小等于什么
2．知道阿基米德原理


过程与方法

通过几个连续的探究活动，</SoftIntroEncode><special /><DownloadUrl></DownloadUrl><Content>&lt;STRONG&gt;&lt;FONT style="BACKGROUND-COLOR: #c0c0c0" size=2&gt;教材分析&lt;/FONT&gt;&lt;/STRONG&gt;
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&lt;TR style="mso-yfti-irow: 1"&gt;
&lt;TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 63pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width=84&gt;
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&lt;TD style="BORDER-RIGHT: windowtext 1pt solid; PADDING-RIGHT: 5.4pt; BORDER-TOP: #ece9d8; PADDING-LEFT: 5.4pt; PADDING-BOTTOM: 0cm; BORDER-LEFT: #ece9d8; WIDTH: 336.5pt; PADDING-TOP: 0cm; BORDER-BOTTOM: windowtext 1pt solid; BACKGROUND-COLOR: transparent; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" vAlign=top width=449&gt;
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<div id="login_model"><iframe name='LogOnFrame' id='LogOnFrame' src='' width='300' height='400' fullscreen=true download=false print=false openfile=false frameborder='no' border='0'></iframe></div>
<script>
    /* 打开弹出框的功能 */
   function openModel() {
        document.getElementById("bjtidu_ground").style.display = 'block';
        document.getElementById("login_model").style.display = 'block';
       // 禁止浏览器滚动
        document.body.style.overflow = 'hidden';
    }
    /**
    * 关闭弹出框的功能*/
    function closeModel() {
        document.getElementById("bjtidu_ground").style.display = 'none';
        document.getElementById("login_model").style.display = 'none';
        // 不遮挡后面的内容将body设置为原始样式，也就是实现可滚动
        document.body.style.overflow = 'auto';
    }

  $("#wxlog").click(function(){
    $("#LogOnFrame").attr("src","/qrconn.aspx");
  })

$(function(){
    var ua = navigator.userAgent.toLowerCase(); 
    if(ua.match(/iPad/i)=="ipad" || ua.match(/Mobile/i)=="mobile") { 
     $("#wxlog").hide();
    }
    else{
    }
})
</script>
<script type="text/javascript" src="/Template/Default/Skin/MMskin/js/tools.js"></script>
<script>
(function(){
    var bp = document.createElement('script');
    var curProtocol = window.location.protocol.split(':')[0];
    if (curProtocol === 'https') {
        bp.src = 'https://zz.bdstatic.com/linksubmit/push.js';
    }
    else {
        bp.src = 'http://push.zhanzhang.baidu.com/push.js';
    }
    var s = document.getElementsByTagName("script")[0];
    s.parentNode.insertBefore(bp, s);
})();
</script>


<script src="/Template/Default/Skin/MMskin/js/SoftInfo.js"></script>
<script>
window._bd_share_config = { "common": { "bdSnsKey": {}, "bdText": "", "bdMini": "2", "bdPic": "", "bdStyle": "0", "bdSize": "16" }, "share": {} }; with (document) 0[(getElementsByTagName('head')[0] || body).appendChild(createElement('script')).src = 'http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion=' + ~(-new Date() / 36e5)];
</script>

<script type="text/javascript">

jQuery(function() {
$(".J_ToggleExpand").each(function(){
var e=!1,o=$(this).find(".J_ExpandBd"),n=o.height();
$(this).on("click",".J_ExpandBtn",function(){e=!e;var i=e?"auto":n+"px";o.css("height",i),this.innerHTML=e?'收起<i class="icon_a_up"></i>':'展开<i class="icon_a_under"></i>'})
});
})
</script>

{PE.Label id="A评论标签" nodeId="{PE.Field id="cone" fieldname="NodeID" /}" /}
<script type="text/javascript">


        function copyToClipboard() {
            var txt = window.location.href;
            if (window.clipboardData) {
                window.clipboardData.clearData();
                window.clipboardData.setData("Text", txt);
                alert("链接地址已成功复制到剪贴板。");
            } else if (navigator.userAgent.indexOf("Opera") != -1) {
                window.location = txt;
            } else if (window.netscape) {
                try {
                    netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
                } catch (e) {
                    alert("被浏览器拒绝！\n请在浏览器地址栏输入'about:config'并回车\n然后将'signed.applets.codebase_principal_support'设置为'true'");
                }
                var clip = Components.classes['@mozilla.org/widget/clipboard;1'].createInstance(Components.interfaces.nsIClipboard);
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                alert("链接地址已成功复制到剪贴板。");
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<script>
var _hmt = _hmt || [];
(function() {
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