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Career & Professional Development

Writing Effective Lesson Aims: The One Sentence That Drives Everything

July 25, 2026 · Sourov · 1 min read

⏱ 5 Minutes · Teacher Training

📖 From Experience

In the feedback room after a lesson observation, the first question is always the same: ‘What was your main aim?’ If you can’t answer in one clear sentence, the lesson was probably unclear. I had to learn this the hard way during 120 supervised teaching hours. A good aim is not what you will do. It is what learners will be able to do.

📚 The CELTA Aim Formula

By the end of the lesson, learners will be better able to [do something specific].

Key words: by the end (measurable) · learners (not ‘students will have been taught’) · better able to (acknowledge prior knowledge) · specific verb (use, describe, write, ask, distinguish — not ‘understand’ or ‘know’)

📚 Good Aim vs Weak Aim

Weak (avoid) Strong (use)
Students will learn about the present perfect. Learners will be better able to use the present perfect to talk about life experiences.
To teach vocabulary about food. Learners will be better able to use 8 food adjectives to describe dishes in spoken English.
Students will understand passive voice. Learners will be better able to use passive constructions in formal written descriptions.
✏️ Your Turn

Improve these aims:

  1. Students will know about modals.
  2. We will do a reading lesson.
  3. Students will understand how to give advice.
💡 Check Answers
  1. Learners will be better able to use modal verbs (should/ought to/had better) to give written and spoken advice.
  2. Learners will be better able to identify the main idea and specific details in a newspaper article.
  3. Learners will be better able to give formal and informal advice using a range of modal structures.

Independent project — not affiliated with, endorsed by, or accredited by Cambridge University Press & Assessment. Confers no qualification.

Put it to work

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