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ï¿½ï¿½û²ï¿½ï¿½ë¡ªêµï¿½ï¿½ï¿½ð¾ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ü½ï¿½ï¿½ï¿½ï¿½ï¿½ä²ï¿½ï¿½è£¬å¬ï¿½ï¿½óªï¿½ï¿½ò»ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½îªï¿½î¶¯ï¿½ï¿½ï¿½ï¿½ï¿½å£¬ï¿½ï¿½ð³æ½ï¿½è»ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï°ï¿½ï¿½ê½ï¿½ï¿½ï¿½ï¿½ö¸ï¿½öªê³ï¿½ï¿½ï¿½ðµï¿½óªï¿½ï¿½ï¿½é·ö¡ï¿½ï¿½ï¿½ï¿½ï¿½(��)���ûºï·ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½öªï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½îªóªï¿½ï¿½ê¦ó¦ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½óªï¿½ï¿½ï¿½ï¿½ê¹ï¿½ï¿½ï¿½çµï¿½ï¿½ï¿½ï¿½ï¿½ü¿ï¿½ö¸ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ç³ï¿½ê³ï¿½ï¿½ê±ó¦×¢ï¿½ï¿½ê²ã´?�ó¶ï¿½ï¿½ï¿½ï¿½×ºï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½óªï¿½ï¿½ï¿½ï¿½ï¿½ï¿½æ«ê³ï¿½ï¿½ï¿½ï¿½ê³ï¿½ï¿½ï¿½ï¿½ê³ï°ï¿½ß¡ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½í¨ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï°ë³ï¿½ï¿½í¨ï¿½ï¿½óªï¿½ï¿½ê¦ï¿½ä¿ï¿½ï¿½ë£ï¿½îªï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½óªï¿½ï¿½ï¿½ï¿½ê³×¢ï¿½â£¬ï¿½ï¿½îªï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½óªï¿½ï¿½ê³æ·ï¿½ï¿½ï¿½ï¿½ê¹ñ§ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ò«ï¿½ð£ï¿½ï¿½ï¿½ç¿ñ§ï¿½ï¿½ï¿½ï¿½ï¿½×°ï¿½ï¿½äµï¿½ï¿½é»³ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ä¿ï¿½ï¿½ï¿½í¬ê±ï¿½ï¿½ï¿½ì²ï¿½ï¿½ï¿½õ¹ï¿½ï¿½ï¿½ï¿½öªê¶ï¿½ï¿½ñ§ï°ï¿½ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½ñ§ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ê³ï¿½ï¿½ï¿½ðµï¿½óªï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½òªï¿½é·ï¿½ï¿½ï¿½ï¿½ï¿½ö¬ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½òªï¿½ï¿½ô´ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½î¬ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ï¿½ë®ï¿½ï¿½ï¿½å²»ï¿½ï¿½è±ï¿½ùµï¿½ï¿½ï¿½òªï¿½ï¿½ï¿½ï¿½教科版小学科学说课稿篇三各位领导、评委老师大家好，我说课的内容是小学科学教科版四年级下册第三单元《食物》中的第二课《食物中的营养》。我说课分为以下六大步骤：一、教学分析^p二、学情分析^p三、教学目的四、教学方法五、教学流程六、板书设计《食物中的营养》是在前一课调查、统计了一天中吃过的食物的根底上进一步对食物中所含有的营养成分进展探究，是让学生懂得营养全面合理的重要性的根底。因此，是承上启下的一课，也是非常重要的一课。通过聘请营养师导师培训营养师这一活动，要让学生认识人体所需要的营养是从食物中得到的，其成分包括蛋白质、糖类、脂肪、维生素、矿物质和水及其作用。完善一天的食物记录，区分食物中的营养物质，属于“实验才能”的系列。这节课分为四局部教学：1、创设情境，引趣揭题2、初步感知，激发探究3、自主探究，理论新知4、综合反应，稳固新知1、学生在日常生活和对上一节课的学习中，对一天的食物已经有了丰富的认识，大多数学生都知道我们是通过食物获取营养的，这是我们能顺利进入并完本钱课的知识根底。2、四年级的学生通过一年半科学课的学习，已能较为纯熟的运用调查、观察、实验、记录等方法进展科学探究，这是学习本课的才能根底。3、在生活中，学生们对食物中所含有的营养成分的认识还相当有限，局部学生甚至一无所知，这是学习本课的障碍，同时也说明了学习本课的必要性。科学目的：理解食物中的主要营养成分,及其对人体的重要性,学会用简单的实验方法检验食物中的营养成分。才能目的：1、可以根据食物中所含有的营养成分的不同对一天中的食物进展分类。2、培养学生实验才能：初步学会用实验的方法区分食物中的脂肪和淀粉。情感目的：通过对食物中的营养成分的理解，让学生意识到养成不挑食的饮食习惯的重要性。帮助学生建立严谨细致的研究态度,养成乐于倾听别人的发言，擅长与同伴交流的习惯。德育目的：培养学生具有爱心，学会帮助别人，乐于帮助人，为困难的人群奉献爱心。【教学重点】知道食物中含有那些营养成分。【教学难点】用实验的方法区分食物中的脂肪和淀粉。(一)说教法1、实验探究法：让学生在实验探究过程中多层次的进展生生之间、师生之间的交往与对话，着力培养学生的创造性与“交互”的主体性，培养学生的实验才能。2、开放式教学法：在教学中运用搜集资料，创设情境，提供材料等教学手段，不断的激发学生的学习潜能，充分发挥学生的主体作用，使学生真正做到主动地、自主地和创造性的学习。3、多媒体演示法：让学生获得丰富的表象，为学生提供形象思维的材料培养学生实验才能，以利于激发学生的学习兴趣和欲望。(二)说学法：本节课根据学生年龄特点，认知规律及学习目的，指导学生掌握以下几种学习方法：1、合作学习交流探究的方法：本节课运用小组合作的学习方法，便于发挥学生之间的互补作用，培养学生参与合作的精神。2、发现法：通过查找资料、分组讨论，加深对科学探究的一般过程的认识，进一步进步提出问题、发现问题、处理信息和分析^p探究结果的才能。3、质疑讨论法：如食物中含有这么多的营养，那么我们没天只吃一种食物行吗?让学生在试验的根底上，提出问题进展讨论交流，营造平等、和谐、互相组中的气氛，使学生敢于发表自己的看法又擅长倾听别人的意见。(一)、创设情境，引趣揭题好的开头是成功的一半，恰当的导入能激发学生的学习兴趣，为新课教学创设最正确的学习气氛，开课时我就选择震慑人心的青海省玉树县发生的地震为起引，带着一起为他们祈祷：愿逝者平安，祈困者脱险，盼生者坚强。观看玉树地震“让世界充满爱”视频，吸引学生的眼球提出那些被困几天在废墟中幸存的人们最需要的'是什么?食物。从而提醒课题。(二)、初步感知，激发探究1、逛超市识营养成分(食物含有哪些营养成分)结合以人为本的理念，以红十字会委派老师充当中国急救营养师导师为引线，创设培养营养师去灾区奉献爱心活动，使学生身负使命感和责任感。组织学生逛超市选取食物，结合课本中的内容，充分熟悉六大营养成分。并运用多媒体手段完善食物中哪些食物中含有这些营养成分。2、查资料解营养作用(食物中营养对身体的作用)贯穿考核营养师活动，让学生自己通过小组合作讨论资料、图书等途径获得的资料自主学习，利用演示文稿介绍食物中营养成分的主要作用。直观、形象地展示人体营养，为学生的形象思维提供根据，将丰富的食物与丰富的营养之间的关系，生动地呈如今学生的视觉之中。学生对问题的解决很感兴趣，成为更加主动，自主的学习者。3、填表格，丰一天食谱(在一天的食物中，我们能获得哪些营养?)使学生通过对“一天中的食物”的重新分类后发现：食物中含有丰富的营养成分，但没有一种食物含有所有的营养成分，因此不能只吃一种食物。学生经历记录、分析^p、整理、归纳、总结的过程锻炼学生的逻辑思维才能和判断力，帮助学生建立严谨的科学态度，为下一节课的学习打下根底。(三)、自主探究，理论新知做实验，辨营养成分(区分食物中的营养成分)1、寻找脂肪2、寻找淀粉3、寻找蛋白质新课程强调从学生兴趣,生活经历和认识程度出发倡导体验、理论、参与、合作与交流的学习方式，为了进步和开展学生的综合才能，进步自我学习的才能。因此创设动感探究式教学形式：讨论猜测—实验研究—互动交流—总结归纳四步骤，努力营造一个以