
4下列结论中正确的是()A0既是正数,又是负数B0是最大的负数要点归纳:正数、负数的概念:(1)大于0的数叫做,小于0的数叫做(2)正数是大于0的数,负数是的数,0既不是正数也不是负数拓展训练:1零下15℃,表示为_________,比0℃低4℃的温度是_________2地图上标有甲地海拔高度30米,乙地海拔高度为20米,丙地海拔高度为-5米,其中最高处为_______地,最低处为_______地3“甲比乙大-3岁”表示的意义是_________________4如果海平面的高度为0米,一潜水艇在海水下40米处航行,一条鲨鱼在潜水艇上方10米处游动,试用正负数分别表示潜水艇和鲨鱼的高度课后作业:P5第1、2题

读万卷书,行万里路读书可以增长见识,带人遍访名山大川,走进沙漠湖海,了解历史,畅想未来,从太阳系遨游至外太空,见识世界的丰富多彩和宇宙的奥妙神奇读书可以修身明智,杨降先生说,读书好比串门儿——隐身的串门儿,要参见钦佩的老师或拜谒有名的学者,不必打招呼求见,也不怕搅扰主人,翻开书面就可以登堂入室如此轻便地与古今中外的圣贤学者交流,总能让人明白世间道理,做更好的自己读书可以修饰容颜,所谓“腹有诗书气自华”,所谓“若有诗书藏于心,岁月从不败美人”,亲爱的同学们,如果希望自己气质高雅,容颜不老,那么,趁春光正好,赶紧读书吧三更灯火五更鸡,正是男儿读书时,可是,“多读一本没有价值的书,便丧失可读一本有价值的书的时间和精力

之后教师检测答案Step 6 practiceDo workbookHomeowrkBlackboard HandwritingUnit 26 People and workLesson 101表示职业:driver farmer soldier businessman shop assistant nurse postman工作地点:factory station bus station hospital farm post office表示做什么工作:I am a teacherHe is a studentMr Smith is a businessman表示在什么地方工作:I work in a middle school

Students are divided into five groups to search for and sorted out the related information according to the assigned task online(2)A representative of each group is to share the information with the others2the Purpose of ActivitiesStudents will develop their ability to effectively sort out information on the Internet throug h group cooperation as well as feel a sense of achievement by their oral presentation
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