“学无止境,教无定法”,数学的教与学也是如此.数学中错综复杂的公式,繁重的计算量,常常使学生无所适从,既花费了大量的时间,又得不到正确答案.如何化繁为简,找到解题的捷径,这就是解题的技巧问题.我在长期教学实践中不断地探索研究,及时地总结经验,认为初中代数中某些公式如能 “There is no end to learning, there is no way to teach,” and mathematics teaching and learning is also the same. The intricate formulas in mathematics and the heavy calculations often make students feel at a loss, and they both spend a lot of time and do not get correct answers. Familiar with simplicity, finding the shortest way to solve problems is the problem of solving problems. I have been exploring and researching in the long-term teaching practice and summing up experience in a timely manner, suggesting that some formulas in junior high school algebra can