北师大版七年级下册数学教案全册

经典word整理文档，仅参考，双击此处可删除页眉页脚。本资料属于网络整理，如有侵权，请联系删除，谢谢！1nnn（n个a相乘）52.323③3232mamnn个aaan8357355823例55555b·b=b（）5555xx=x()y·y=2y()()m+m=m34()5（x·x=2437mn22))2324）24nmnm2nmnmnm34437s322（（））5）336）））246333343423245m）82n3mma,aamnx5x_______26666xxx_______3xxxx_______353324_____()x335(m)(m)________(x)_____2n324）a()a5382362352245_________________________(______)3385_________________________(______)35(34m(ab)n(__)(__)(ab)6663332(xy)(__)(__)____222225555_______(ab)353(ab)3_____________2234210)____________22(212(nm3232a24233222(3a)b3(ab)a24412324求2，2003mn25xn2435326242410（1）1085101010m10＝（3）10mn103n3m＝－333＝mn3a,n都是正整数，且＞namna552y596215yn1222xy648435503221030.2534a64,求m的值。an的值。3m2nmn1222x33x410xx291－x24x1x）411xx－x22441例222233•(2a2a)6a6aa－x－－－xy2223423812226212)231)2ab4222232)）332231236(xy)(xyxyy)[(222222232534222253n22962323(xy)________3322210)________(x)(x)_________(742a(a)_________(x)_____3526a)a______（7）(（8）235(2ab)(abc)______23522125xy)(6xy)(2312(x2)(x112334(x2)2(x2y)22225)(x20)xmxn(x(x22a)(5x2)10x6xb(2x2x2x6(x2)(x(x2)(x2)(x2)x2)(x2x与3225x5yx5yxa－xyyxa3x3x112a2（）（）2222xy2xy4xy3x222224a1a352x52x222x222x22522；222；2222222222222222222222226教学目标：abab⑴b⑵①、、、;；a。ab：。22222222和②22222(a2b)a2ab2b②③222222222xyyxa4a1a32211②③22527aax3n6xy5222422★52ab2ababc24322213422264341338m2n152m3a28abc2ab32343233作课本P73232·(？)积3232232324332222yyy2222233d)22i与800）00））（0））2ADOB6小余角、同角或等角的补角作baabab平EEB∠1与A3175731CBD82442DC68AFF行题6c23145AbaB题A∴∥，C123DE∴∥4FBG∴∥，，ED54∴∴∥，BCF＋∵．一C二AoB1求321∠BAAPCB（2）PPLpAA第4题第5题线CCBHHXX小SSrhSr,高为h,面积S一6CCxy23.222134rr31.332SxCCx当xSC小作XY01235vr由19A1488；）D①②③④点小作PAF4GBCDECbAacB，三条边分别是。和2．已知一个三角形的两边长分别是和4cm，则第三边长X的取值范围是个个（））3x2xx）A3xx2xBC）））)))例1例2于于AC折D交于D到与与与，LALALA'LAB''ABCABCABC'''L至622.过程与方法:通过对问题的分析,理解用频率来估计概