许光远 2016-12-04 12:16
<p class="MsoNormal"> <span style="font-family:宋体;">（说明：小结不仅要总结知识，更重要的是将本节课研究问题的方法及思维程序提炼出来，学生学会这些方法并体会到它们在解决问题中的作用，从而实现教学的真正目的。）</span> </p> <p class="MsoNormal"> <span style="font-family:宋体;">七：板书</span> </p> <p class="MsoNormal"> <span>1</span><span style="font-family:宋体;">、压力</span><span>:</span><span style="font-family:宋体;">垂直作用在物体表面上的力</span> </p> <p class="MsoNormal"> <span><span> </span>2</span><span style="font-family:宋体;">、压力产生的效果</span><span>:</span> </p> <p class="MsoNormal"> <span><span> </span>(1)</span><span style="font-family:宋体;">跟压力的大小有关。受力面积相现时压力越大</span><span>,</span><span style="font-family:宋体;">产生的效果越大</span> </p> <p class="MsoNormal"> <span><span> </span>(2)</span><span style="font-family:宋体;">跟受力面积有关。在压力一定时</span><span>,</span><span style="font-family:宋体;">受力面积越小</span><span>,</span><span style="font-family:宋体;">产生的效果越大</span> </p> <p class="MsoNormal"> <span><span> </span>3</span><span style="font-family:宋体;">、压强</span><span>:</span><span style="font-family:宋体;">物体在单位面积上受到的压力</span> </p> <p class="MsoNormal"> <span><span> </span></span><span style="font-family:宋体;">压力</span> </p> <p class="MsoNormal"> <span><span> </span></span><span style="font-family:宋体;">压强的计算公式</span><span>:</span><span style="font-family:宋体;">压强</span><span>(</span><span style="font-family:宋体;">单位面积上受到的压力</span><span>) =<span> </span></span> </p> <p class="MsoNormal"> <span><span> </span></span><span style="font-family:宋体;">受力面积</span> </p>
许光远 2016-12-04 12:16
<p class="MsoNormal"> <span style="font-family:宋体;">（说明：小结不仅要总结知识，更重要的是将本节课研究问题的方法及思维程序提炼出来，学生学会这些方法并体会到它们在解决问题中的作用，从而实现教学的真正目的。）</span> </p> <p class="MsoNormal"> <span style="font-family:宋体;">七：板书</span> </p> <p class="MsoNormal"> <span>1</span><span style="font-family:宋体;">、压力</span><span>:</span><span style="font-family:宋体;">垂直作用在物体表面上的力</span> </p> <p class="MsoNormal"> <span><span> </span>2</span><span style="font-family:宋体;">、压力产生的效果</span><span>:</span> </p> <p class="MsoNormal"> <span><span> </span>(1)</span><span style="font-family:宋体;">跟压力的大小有关。受力面积相现时压力越大</span><span>,</span><span style="font-family:宋体;">产生的效果越大</span> </p> <p class="MsoNormal"> <span><span> </span>(2)</span><span style="font-family:宋体;">跟受力面积有关。在压力一定时</span><span>,</span><span style="font-family:宋体;">受力面积越小</span><span>,</span><span style="font-family:宋体;">产生的效果越大</span> </p> <p class="MsoNormal"> <span><span> </span>3</span><span style="font-family:宋体;">、压强</span><span>:</span><span style="font-family:宋体;">物体在单位面积上受到的压力</span> </p> <p class="MsoNormal"> <span><span> </span></span><span style="font-family:宋体;">压力</span> </p> <p class="MsoNormal"> <span><span> </span></span><span style="font-family:宋体;">压强的计算公式</span><span>:</span><span style="font-family:宋体;">压强</span><span>(</span><span style="font-family:宋体;">单位面积上受到的压力</span><span>) =<span> </span></span> </p> <p class="MsoNormal"> <span><span> </span></span><span style="font-family:宋体;">受力面积</span> </p>