幼儿园小班科学教案：皮球跳起来了
<p><span><strong>【活动目标】</strong></span></p><p><span> </span></p><p><span>1<span>、通过玩球、拍球活动、知道有气的球跳得高、没气的球跳不起来。</span></span></p><p><span> </span></p><p><span>2<span>、观察手动充气工具充气的过程，感知皮球的外表变化。</span></span></p><p><span> </span></p><p><span>3<span>、喜欢参与科学小游戏，对科学活动感兴趣。</span></span></p><p><span> </span></p><p><span><strong>【活动准备】</strong></span></p><p><span> </span></p><p><span>1<span>、经验准备：幼儿玩过有气的球，尝试拍、滚过球。</span></span></p><p><span> </span></p><p><span>2<span>、物质准备：瘪球三个，手动充气工具一个。</span></span></p><p><span> </span></p><p><span><strong>【活动过程】</strong></span></p><p><span> </span></p><p><span>一、玩球活动。</span></p><p><span> </span></p><p><span>1<span>、教师</span><span>(</span><span>出示瘪皮球</span><span>)</span><span>：这是什么</span><span>?(</span><span>皮球</span><span>)</span><span>你以前玩过吗</span><span>?</span></span></p><p><span> </span></p><p><span>2<span>、请几个幼儿上来玩一玩瘪皮球，其他幼儿观察。</span></span></p><p><span> </span></p><p><span>教师：今天玩的皮球和我们以前玩的皮球有什么不一样<span>?(</span><span>这个皮球拍不起来</span><span>)</span></span></p><p><span> </span></p><p><span>二、感受空气。</span></p><p><span> </span></p><p><span>1<span>、今天我们玩的皮球为什么拍不起来呢</span><span>?(</span><span>因为它没气了</span><span>)</span></span></p><p><span> </span></p><p><span>2<span>、认识充气工具，感受充气工具里出来的气体。</span></span></p><p><span> </span></p><p><span>教师出示手动充气工具，让幼儿认识这是给皮球充气的。用手动充气工具，在幼儿的表面皮肤<span>(</span><span>脸上、手上</span><span>)</span><span>打气，让幼儿感受充气工具里出来的气。</span></span></p><p><span> </span></p><p><span>三、给皮球充气，感受球逐渐变鼓的过程，知道手动充气的方法。</span></p><p><span> </span></p><p><span>1<span>、教师：我们来给皮球充气吧，气要从哪里才能进去呢</span><span>?</span><span>我们来一起找找看皮球的充气孔在哪里。</span></span></p><p><span> </span></p><p><span>2<span>、教师和个别幼儿用手动充气工具给</span><span>2</span><span>只皮球充气，让幼儿幼儿双手捧着皮球，感知皮球渐渐鼓起来的过程。</span></span></p><p><span> </span></p><p><span>四、幼儿玩球，感受充足气体的皮球跳得高。</span></p><p><span> </span></p><p><span>1<span>、教师：现在充满气的皮球和刚才的一样吗</span><span>?</span><span>有什么不一样的呀</span><span>?(</span><span>现在的有气，能跳起来</span><span>;</span><span>刚才的没气球跳不起来。</span><span>)</span></span></p><p><span> </span></p><p><span>2<span>、教师：现在皮球有气了，可是皮球宝宝跳得很低，谁有办法能让皮球宝宝跳得高一点</span><span>?</span></span></p><p><span> </span></p><p><span>教师与幼儿一起讨论，得出结论：气的多少与球的弹跳高度有关，气越足，皮球跳得越高。</span></p><p><span> </span></p><p><span>3<span>、请个别幼儿尝试操作。</span></span></p><p><span> </span></p><p><span>五、进行游戏。</span></p><p><span> </span></p><p><span>教师把皮球都放掉气，幼儿来给它充气，然后拍皮球。比一比，谁的皮球跳得最高<span>?</span></span></p><p><span> </span></p><p><span>游戏可进行<span>3—4</span><span>遍。</span></span></p>
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