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最新英语作文高中与大学区别备课讲稿

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It's about half a year since I entered the university, and I find the way of study in university is different from the study in high school.
Firstly, in the high school study hard in order to enter the university but in the university to study hard for its own future. High school class much more than the university，university life is relax, we don’t need to study from morning till night，we have more time to be free
Secondly, at high school, we're only permitted to study our subject, and we would study extremely hard to get more marks which made us stay up. In the free time, we never did some sporting and relaxed ourselves However, in college, we're allowed to learn what we're interested in. We can take part in all kinds of societies
Thirdly, in high school, We only know the people in the school, but in college, We will communicate with all kinds of people in society

we are not only study hard but also to establish a relationship with students to get along well with others.
To conclude, although our lifestyle has changed a lot, We still need to do something to make sense of our lives We can't only focus our energy on computer games. We should enjoy a wonderful university life 七年级数学（上）知识点
人教版七年级数学上册主要包含了有理数、整式的加减、一元一次方程、图形的认识初步四个章节的内容.
第一章有理数
一、知识框架

二．知识概念
1.有理数：
q(1凡能写成(p,q为整数且p0形式的数，都是有理数.正整数、0、负整数统称整数；正p分数、负分数统称分数；整数和分数统称有理数.注意：0即不是正数，也不是负数；-a不一定是负数，+a也不一定是正数；不是有理数；

正整数正整数整数零正有理数正分数(2有理数的分类: ① 有理数零 ② 有理数负整数 负整数正分数分数负有理数负分数负分数2．数轴：数轴是规定了原点、正方向、单位长度的一条直线. 3．相反数：
(1只有符号不同的两个数，我们说其中一个是另一个的相反数；0的相反数还是0； (2相反数的和为0  a+b=0  a、b互为相反数. 4.绝对值：
(1正数的绝对值是其本身，0的绝对值是0，负数的绝对值是它的相反数；注意：绝对值的意义是数轴上表示某数的点离开原点的距离；
a(a0(a0a(2 绝对值可表示为：a0(a0或a ；绝对值的问题经常分类讨论；
a(a0a(a05.有理数比大小：（1）正数的绝对值越大，这个数越大；（2）正数永远比0大，负数永远比0小；（3）正数大于一切负数；（4）两个负数比大小，绝对值大的反而小；（5）数轴上的两个数，右边的数总比左边的数大；（6）大数-小数＞ 0，小数-大数＜ 0. 6.互为倒数：乘积为1的两个数互为倒数；注意：0没有倒数；若 a≠0，那么a的倒数是若ab=1

1；a

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