����������������������������������·���·第一章丰富的图形世界1生活中的立体图形....................22展开与折叠..........................83截一个几何体.......................134从不同方向看.......................16回顾与思考............................19复习题................................19第二章有理数及其运算1有理数.............................232数轴...............................273绝对值.............................304有理数的加法.......................345有理数的减法.......................406有理数的加减混合运算...............437水位的变化.........................478有理数的乘法.......................499有理数的除法.......................5510有理数的乘方......................5811科学记数法........................63目录MULU1第三章整式及其加减1字母表示数.........................782代数式.............................813整式...............................874整式的加减.........................905探索规律...........................98回顾与思考...........................101复习题...............................101综合与实践探寻神奇的幻方.......................105第四章认识基本的平面图形1线段、射线、直线..................1082比较线段的长短....................1123角................................1164角的比较..........................1205基本的平面图形....................124回顾与思考...........................128复习题...............................12812有理数的混合运算..................6513用计算器进行运算..................68回顾与思考............................72复习题................................722第五章一元一次方程1你今年几岁了......................1322解方程............................1373我变高了..........................1434打折销售..........................1475“希望工程”义演...................1496能追上小明吗......................152回顾与思考...........................154复习题...............................154第六章数据的收集与整理1节约用水..........................1572普查和抽样调查....................1623数据...
