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全解全析2026上海宝山八年级数学期末试卷2026.6.23

  • 2026-06-25 18:25:19
全解全析2026上海宝山八年级数学期末试卷2026.6.23

在上海一线教学8年,专注于初中数学教学,注重知识点的来龙去脉,培养孩子的条件解读分析能力,以不变应万变。每个学生都有自己的长处,每个孩子都值得温柔以待。


宝山区八年级的期末卷,和杨浦卷有点像,基础题充足保证及格底线,但压轴综合题综合性强、模型隐蔽,区分度高,对学生几何辅助线构造、代数坐标运算、文字建模能力要求较高;

基础题思维容量比较大,大部分题目需要动笔写一下才能出答案,很多同学在网上吐槽,说教研员对学生们太狠了,题目根本不会做。这份试卷中的第22题是一道拉分题,改编自2024年的填空第17题,当年考完完后孩子们“一片哀嚎”,这道题我放在期末复习题中了,不知道大家做过没有。

(1)基础送分题(40%,全体学生可拿分)

选择1、2、3、4、5;填空7、8、11、12、13;解答17,主要考查多边形内角和、菱形矩形基础性质、数轴距离、坐标平移、一次函数基础、函数交点基础计算。公式直接套用,无复杂辅助线,计算简单,中等偏下学生也能稳拿分。

(2)中档核心题(40%,中等生得分主力)

填空9、10、16;解答18、20、21(1)主要考查中位线、三角形与平行四边形面积关系、新定义面积等分线、平行四边形证明、面积法求线段长。需要简单几何模型转化,少量辅助线,对学生图形识别、逻辑书写有要求。

(3)压轴难题(20%,区分尖子生)

填空16、解答21(2)(3)、22反比例综合、23几何实操切割

第16题虽然是一个新定义题,但是面积等分问题在平时做过很多遍,我相信这道题大部分孩子都能做对并很快就能找到解题思路,注意夹角45度需要考虑两种情况,即直线向上倾斜和向下倾斜两种情况。

21(2):角平分线几何证明,需要构造斜边中线,模型隐蔽,第(3)问进行面积转化。

22:反比例+矩形坐标综合,代数几何结合,代数计算量大、坐标变换抽象;

23:实际应用+解直角三角形+尺规作图,结合生活场景,文字信息量大,作图需先搞清楚背后的原理。

这份试卷出的挺好的,比较能检验大家在数学上的基本功,感觉1-21题有难度的同学,基本功需要夯实,再次强调一遍,不要只顾着刷题,知识点的熟练和基本题型的基本解法是核心。

试卷解析:

下面是教研员给的官方答案:

看完试卷解析你有什么想说的吗?可以在留言区说说哈


暑假学习安排已经整理完毕。只梳理题型思路,没有繁杂套路。

今天的分享就到这里了哈😊,
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  1. CONNECT:[ UseTime:0.001154s ] mysql:host=127.0.0.1;port=3306;dbname=www_sjds;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001684s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.007606s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.005692s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001821s ]
  6. SELECT * FROM `set` [ RunTime:0.001743s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001691s ]
  8. SELECT * FROM `article` WHERE `id` = 505658 LIMIT 1 [ RunTime:0.012765s ]
  9. UPDATE `article` SET `lasttime` = 1782393121 WHERE `id` = 505658 [ RunTime:0.032811s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000785s ]
  11. SELECT * FROM `article` WHERE `id` < 505658 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001418s ]
  12. SELECT * FROM `article` WHERE `id` > 505658 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001125s ]
  13. SELECT * FROM `article` WHERE `id` < 505658 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.007409s ]
  14. SELECT * FROM `article` WHERE `id` < 505658 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.021906s ]
  15. SELECT * FROM `article` WHERE `id` < 505658 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.057594s ]
0.341942s