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A-level物理辅导简答题答非所问怎么破?

学通国际2019-10-12名师指导

  A-level物理辅导简答题看起来复杂多变,让人感到一头雾水,无所适从。但实际上,做这类题有一定的方法和技巧,只要熟练掌握,很多文字叙述题都可以迎刃而解。

  在这类题中经常会出现一些关键词(command words),比如,”Define”, “State”, “Compare”, “Describe”等。

A-level物理辅导简答题答非所问怎么破?

  大纲中对这些Command words给出了明确的定义与描述,告诉学生该如何回答这类问题。

  在这里,我们总结经常出现的command words,帮助大家”拿下”这些纸老虎。

  State/Define:

  A formal statement is required or, if you give the defining equation, all terms in the equation must be explained. Where a ratio is involved, the ratio must be made clear. For example, density is mass per unit volume, not mass of unit volume. When defining a quantity, this should not be done in terms of units.

  我们看到State/Define的简答题,虽然要求给出formal statement, 但是如果你给的是defining equation也一样拿分。我的天,终于不用背这么长的英文定义了。

      Compare:

  it requires candidates to provide both similarities and differences between things or concepts.

  也就是说,对于”Compare”的简答题,我们需要明确的给出”similarities” 和“differences“。看,是不是很容易就拿到分了。

  Describe:

  Set out the facts or characteristics. The deion of a process should address what happens, and when and/or where it happens.

  “Describe”类的简答题,也是比较容易丢分的题。对于这类题,我们需要强调两点点:”what happens”和“when/ where it happens”。

  举例说明:

  首先, what happens :

  alternating p.d. is applied, magnetic field changes, alternating p.d. is induced.

  其次, when/where it happens:

  在这里,我们需要指出”where it happens”。Magnetic field 是在iron core里变化,the induced p.d. 存在于 secondary coil。

  最后,我们将这些点串起来:

  alternating p.d. applied in the primary coil causes the changing magnetic field, which induces alternating p.d. in the secondary coil. 对比给出的答案,我们很容易拿到了full mark。

  explain:

  Set out reasons and/or mechanisms to address why and/or how something happens.

  For example, when asked to explain the change in rate of reaction seen on a graph, the expected response would suggest scientific reasons for any change seen, for example in terms of molecular collisions or enzymatic action.

  对于需要explain的题目,我们需要就题干中发生的事情,给出物理机制或者原因。

  Give: a short answer is required without explanation.

  以上就是A-level物理辅导简答题答非所问怎么破的介绍,想要了解更多Alevel辅导的信息,可以咨询学通国际教育老师。

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