Four Ways to Restrict Access to Electronic Documents
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It is essential to limit access to sensitive files and documents in the event that your company keeps private information about deals or accounts, or handles sensitive employee and client data. Even when your employee...
Board Meeting Preparation
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Board meeting preparation involves a lot of reading, taking notes, thinking/contemplating, and seeking out and asking for additional information. This improves the efficiency of the board and allows them to spend more...
How to Choose a Data Room With Data Room Access Control
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Access control to your data room allows you to monitor entry and exit to your data center and quickly cancel permissions at any time when there are doubts or suspicions. Advanced security features such as dual interve...
Why Startups Use Digify to Organize Due Diligence
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A data room is a repository for sharing confidential documents during due diligence with potential buyers or investors. Private equity companies, investment banks companies, and other financial institutions make use o...
优点：板书条理清晰有层次，讲解细致有助于学生理解，元素微观结构和宏观性质相结合
不足：应注意金属活动性顺序表的使用条件
优点：从结构角度分析钠的化学性质；讲解实验；拓展钾和水的反应，有助于以后学习元素周期律。
缺点：视频语速过快了，听不清；水的电离是在选修讲的，这时候学生还没有学过。
优点：板书整洁、美观、有条理；实验切合教学内容，能够吸引学生学习的兴趣；尊重学生的主体性。
缺点：语言比较平淡，语速较快。
优点：重难点突出，逻辑清晰有条理。板书设计合理美观，课程具有一定的过渡性。
缺点：视频播放稍微有一点快。
优点：板书清晰整洁，有助于学生理解，激发学生兴趣，提高学生掌握程度，是一节不可多得好课啊。
缺点：视频快进过头了。