排序方式： 共有7条查询结果，搜索用时 62 毫秒
1
1.
教学法的改革是要从“教”和“学”两方面入手,先找出两方面存在的问题,然后对症下药地进行改革。笔者针对当前“教”和“学”两方面的一些弱点,提出三段教学法的探索性意见,望广大中学老师指正。一、“教”和“学”中的薄弱环节1.教法中的薄弱环节(1)思想认识上,认为自已教学多年,连续几年毕业生的高考成绩还不错,有满足现状的思想。这种思想自觉或不自觉地成为教法改革的阻力,也必然影响了对学生进行智能的培养。(2)填鸭式、满堂灌的教学方法。据调查,大部分学生上课时精力集中的时间约为25～30分钟;因此,教师不放心,便用多次重复的教学方法。这样做不但不能引起学生的兴趣,反而冲淡了教材的重点内容。 相似文献
2.
To improve separate effect of binary heterogeneous azeotrope in the magnetic field with different magnetic induction intensity, the influence of magnetic field on the rectification process of binary heterogeneous azeotrope was investigated with l-butanol-water system. The results show that the composition of liquid-liquid phase equilibrium of l-butanol-water system has definitely changed, the composition of l-butanol in light phase （l-butanol layer） increases by 1. 17%-1.63% and the composition of water in heavy phase （water layer） increases by 1.21%-1.58% under the influence of magnetic field. By separation of magnetization, the composition of l-butanol increases by 0.8%-1.2% and the recovery ratio of 1 -butanol increases by 1.6%-2.5%. Magnetic field has positive effect, however, the magnetized effect is not in proportion to magnetic induction intensity and has an optimum condition, in the range of 0.25 T-0. 3 T. 相似文献
3.
4.
贾绍义 《青岛职业技术学院学报》1999,(1)
本文对高等职业教育的培养目标、涵义、高等职业教育的产生、发展和培养人才的定位做了较深入的探讨,同时对高等职业教育的特色、课程结构和设置进行了较为概括的论述。 相似文献
5.
加州大学伯克利分校教师评价系统解构 总被引：1，自引：0，他引：1
本文全面介绍了加利福尼亚大学伯克利分校教师评估体系的构成和运行机制,分析了该体系具备的优势以及存在的不足,并结合目前我国高等院校教学质量评估体系的实际情况进行了比较和讨论。 相似文献
6.
The effect of magnetic field on α-amylase was studied. Under the experimental conditions, α-amylase solution was treated by 0.15 T, 0.30 T and 0.45 T static magnetic fields for a known period of time, then the activity, kinetic parameters, and the secondary conformation were investigated. The results showed that there was a considerable effect of the magnetic exposure on the α-amylase. The activity was increased by 27%, 34.1%, 37.8% compared with the control. It was also found that both kinetic parameters K m and V m could be decreased due to the increasing magnetic field, K m decreased from 2.20×10?2 to 0.87×10?2, whereas V m decreased from 2.0×10?3 g/min to 1.1×10?3 g/min. At the same time, there were some irregular changes in α-amylase secondary conformation. 相似文献
7.
1