2022学年第一学期郑光南《方程的意义》

人教新课标五年级数学上册方程的意义天平砝码托盘指针和刻度盘等式35+65=1005x+32=47X-14>7228<16+14Y+246(y+2)=425x+6y=349x3=36-x110-55=5535+65=1005x+32=476(y+2)=429x3=36-x110-55=555x+6y=349x3=36-x5x+6y=346(y+2)=425x+32=47找一找下面式子哪些是等式，哪些是方程？方程等式方程35+65=1005x+32=47X-14>7228<16+14Y+246(y+2)=425x+6y=349x3=36-x110-55=5535+65=1005x+32=476(y+2)=429x3=36-x110-55=555x+6y=349x3=36-x5x+6y=346(y+2)=425x+32=4735+65=100110-55=559x3=36-x5x+32=476(y+2)=425x+32=476(y+2)=429x3=36-x5x+6y=34找一找下面式子哪些是等式，哪些是方程？等式35+65=1005x+32=47X-14>7228<16+14Y+246(y+2)=425x+6y=349x3=36-x110-55=5535+65=1005x+32=476(y+2)=429x3=36-x110-55=555x+6y=349x3=36-x5x+6y=346(y+2)=425x+32=4735+65=100110-55=559x3=36-x5x+32=476(y+2)=425x+32=476(y+2)=429x3=36-x5x+6y=34等式等式5x+32=479x3=36-x6(y+2)=425x+32=479x3=36-x5x+6y=346(y+2)=425x+32=479x3=36-x5x+32=479x3=36-x6(y+2)=429x3=36-x5x+32=476(y+2)=429x3=36-x5x+6y=345x+32=476(y+2)=429x3=36-x5x+6y=349x3=36-x5x+32=475x+6y=349x3=36-x6(y+2)=425x+32=475x+6y=349x3=36-x等式方程6(y+2)=425x+32=475x+6y=349x3=36-x找一找下面式子哪些是等式，哪些是方程？等式5x+6y=349x3=36-x5x+32=476(y+2)=425x+32=476(y+2)=429x3=36-x5x+6y=34等式等式5x+32=479x3=36-x6(y+2)=425x+32=479x3=36-x5x+6y=346(y+2)=425x+32=479x3=36-x5x+32=479x3=36-x6(y+2)=429x3=36-x5x+32=476(y+2)=429x3=36-x5x+6y=345x+32=476(y+2)=429x3=36-x5x+6y=349x3=36-x5x+32=475x+6y=349x3=36-x6(y+2)=425x+32=475x+6y=349x3=36-x方程说一说：方程与等式之间的关系方程一定是等式；但等式不一定是方程。等式1、看图列出方程。3χ=186图1已经走X米还剩73米166米图2χ+73=166一、写一写家学校

-5+8=15二、你能给方程配上具体的情景吗？（1）a+1=12（2）6m=300（3）2x+10=30

早在三千六百多年前，埃及人就会用方程解决数学问题了。在我国古代，大约两千年前成书的《九章算