小学数学《简单数据分析》教学设计.doc

【第一课时】 简单的数据分析 教学目标 进一步认识横向条形统计图和起始格与其他格表示不同单位量的条形统计图。 让学生根据统计图进行初步的数据分析，通过分析寻找信息，并根据这些信息作出进一步的判断和决策。 通过数学活动体验与同伴交流学习的乐趣，培养学生对数学的亲切感，感受数学与生活的密切联系感受统计知识对于生活的指导作用。。。 通过观察统计图，请你预测如果全开的情况一个小时要流失多少水？ 有的同学说“水龙头没关紧的时候才流失了那么一点水，看来以后可以不用每次都 关好水龙头了”你同意吗？为什么？ 你平时一般采取哪种用水方式呢？估计一下一天中你大概用了多少水？（讨论） 为了倡导市民节约用水，政府出台了一项新政策：水龙头流量控制在540升/时以 下。按照这项政策，平时我们用水的时候，水龙头开到什么程度上合适呢？ 就在我们把用水当作一件普通得不能再普通的事情的时候，中国的西部，还有成千上万的人这样生存着（出示图片或农村土地干旱的视频）你有什么想法？ （五）课后小结 1．今天我们学习了什么知识？ 2．通过今天的学习，你有哪些收获？ 3．你觉得统计在我们的生活中重要吗？它有什么作用？ of support and hanger. Cable hole plugging gaps should use qualified fireproof materials, block surface should have sufficient strength, surface appearance. When cables pass through the firewall, of lax structure of local fire safety clamps. Thermoplastics production, to comply with the process, no bubbles in the thermoplastics pipes, linear nose consistent with the core wire specifications, contact is good, no cracks, break. Tinned copper nose clean solder full exterior surface is smooth without burrs. Control cable Assembly should be fastened, dense, solid, clean, and beautiful. Secondary wiring the cable terminations should be arranged by the actual location of the device line cards, the wiring from the upper to the lower, from left to right in the order. Fixed to maintain consistent spacing between lines, flat, should be around the corner in the same location, same shape, to ensure that the wiring process neater and more elegant. 5 thermal process control measures for quality problems 5.1 control thermal duct system leakage measure to ensure that the use of electric door and actuator installation quality and equipment to the site to check its seal, acceptance, in order to fundamentally solve oil spill problems. Plant for local Panel after installation, in conjunction with the quality Department to check its overall quality, poor-quality parts replacement. Supply good quality of purchasing instrument and ovality of the guarantee instrument tubes as small as possible, selection o