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1、y1ninjishangcekexuefuxiziIiao一年级上册科学复习资料wmenZhidaodezh1WiIgongt6ngdinyuyechangzaidishanghu1shengzhnghuiZhdngda1我们知道的植物共同点:有叶,长在地上,会生长,会长大,huikaihua会并。hdi6tzidngdngWfIb1shizh1WfIsIidohudbshizh1WfI蝴蝶,兔子等动物不是植物,塑料花不是植物。wmenguanChdZhfWi1defangfyngynjingkny6ns6ddioXfngZhUdng2 .我们观察植物的方法:用眼睛看,颜色,大小,形状y6ng
2、shumhub6runying用手摸厚薄,软硬yngbiZiw6nWUidao用鼻子闻味道guanchshfnCc6ngzhngt1daojdbi观察顺序:从整体到局部y1kzhiwuy6usangbufenzuchenggnjingy3 .一棵植物由三个部分组成:根、茎、叶wmenchideIu6boshuyign我们吃的萝卜属于“根”4 .叶片是多种多样的,每片叶子都不相同,但是有相同dejieguyepianheyebgzaiyepianzhngyuyemai的结构:叶片和叶柄,在叶片中有叶脉。做叶片愉叶柄pndun1ingpiyezishibushitongyizhngdeyijush
3、Xingzhuangyanse5 .判断两片叶子是不是同一种的依据是“形状”,“颜色,daxiaoqweiruany1ngdengdubukey大小,气味,软硬”等都不可以。Changjianyepianxngzhuag6 .常见叶片形状:fengshuyexiagShouzhangxingsngshuyeXiangzhenx1枫树叶像手掌形,松树叶像针形Iiushuyexiangmeimaoxigqianniuhuaxiagaixixgyinxngyexiag柳树叶像眉毛形,牵牛花像爱心形,银杏叶像shanzixfng扇字形zaiXiaoyudnITxunzhaoshuyeshizhuybu
4、egjiantacoopingbunengsuyicai7在校园里寻找树叶时:注意不能践踏草坪,不能随意采zhaizhfwuyinggaiaihuhanjngbusufyiphuaizhyianquanjshijIu摘植物,应该爱护环境,不随意破坏,注意安全,及时记录。zhwushihuodemapaduanyijuxyaoydnggudghuizhangdaneng8.植物是“活”的吗?判断依据:需要阳光,会长大,能kaihuahuizhangyeyugushiyaojiaoshu开花,会长叶,有果实,要浇水。zhfwudeShengzhangshiyubianhuademeigejiedu
5、andubuyyangchunxiaqiu9.植物的生长是有变化的,每个阶段都不一样,春夏秋donggebuXiangtong冬,各不相同。wmenKbukaizhwuyaochizhwurumTfanmianbaoShuTguoIiydng10.我们离不开植物,要吃植物,如:米饭,面包,水果。利用zhwurumuwmeihuachegshimudengcaomaozhiwuhaikeyTzhibing植物,如,木屋,美化城市,木凳,草帽。植物还可以治病:huanghuahao黄花蒿。b1jiaodeyijuyuhndudaxiogaoipangshuq1ngzhngdngdanshiyaoI
6、1比较的依据有很多:大小,高矮,胖瘦,轻重等,但是要zhuyitongyibiaozhunbijiaoyogongping注意“统一标准,比较要公平二Zhiwb1SGish(yozhiy1gngp1ngx1ngyua1dinh6dinc6in6ngJ1nXfngb1jio12.纸蛙比赛时要注意:公平性,有起点和终点才能进行比较,b1siSdnc)比赛三次。ceIiangshTb1jiaogegzhunquewomendeshent1yekeyTzweiceIianggdngju13.测量,使比较更准确,我们的身体也可以作为测量工具,rushubShouzhangjiaozhagdeng如手臂,
7、手掌,脚掌等。yiZhQHpmUzh1h6zhngzhiiin1ingshenchngdechdngdi14.“一摔”:夫拇指和中指尽量伸长的长蔗。butongdewutTceIiangJiegubukeyTjinxgb1jiaoyinweibiaozhuby15.不同的物体测量结果不可以进行比较,因为“标准”不一yang样。XiangtongdewutTceIiangjiegukeyjinxingb1jiaoyinweibiaozhuyfyang相同的物体测量结果可以进行比较,因为“标准”一样。zaiyngyizhahexiaoIifangtTjinxngceIiangshyaozhuyic
8、ogqT16,在用“一探”和“小立方体”进行测量时要注意:从起diankaiShTdaozhngdianjieshIianggexiaoI1fangtTzhijianyingkao1ngbunengfe点开始,到终点结束;两个小立方体之间应靠拢,不能分kai开。yngXiaozhengfangtTIaiceIiangdehaochushxiaoIifangf1fagbiangeng17.用“小正方体”来测量的好处是:小立方体方便,更haoshukeyidieqTIaimeigechdgduduxiangtong好数,可以叠起来,每个长度都相同。yngxiaoIifangtTceIidngyud
9、ndewutTshfaxianbufangbiasuyiyngzh18.用小立方体测量圆的物体时,发现不方便,所以用“纸daijxgceIianghaochushizhdaikeyijuanqTIaiqingbuzhandfang带”进行测量,好处是:纸带可以卷起来,轻,不占地方,fangbian方便。zh1daiyouqTdiancongkaishi纸带有起点,从O开抬。chTzishTyngdeshibiaozhunddnweiyoumTIimThdiyuhdomikedugeng19.尺子使用的是标准单位,有米、厘米还有毫米;刻度更xiaoceIianggengzhunqueChTZidecaizhburongyihuaiceIiangqTIaib1-i6of小,测量更准确;尺子的材质不容易坏;测量起来比较方bian便。Yy