In a wider sense, a lesson is an insight gained by a learner into previously unfamiliar subject-matter. Such a lesson can be either planned or accidental, enjoyable or painful. The colloquial phrase "to teach someone a lesson", means to punish or scold a person for a mistake they have made in order to ensure that they do not make the same mistake again.

Lessons can also be made entertaining. When the term education is combined with entertainment, the term edutainment is coined.

Types of lesson

• One teacher/instructor with many students
• Private tuition (one-on-one teaching)
• No teacher presence, perhaps a formal learning time with use of textbooks or multimedia

Pre-recorded tapes have been a popular method of learning, particularly for foreign languages and modern techniques such as video conferencing have allowed teaching to be undertaken without the students or teachers being in the same room.

Lesson plan

main: lesson plan Teachers and instructors usually have a lesson plan which dictates the structure of the teaching. A group of lessons may be linked together in a unit plan, scheme, or work. The detail of the plan may vary with some being a simple list of what is going to be taught in a lesson with others working including much more detail, such as a time plan and the learning aims and objectives. Student teachers and beginning teachers are usually advised to put a great amount of detail into the written plan. This ensures that the plan will be cohesive, that all the components of a successful lesson are taken care of, and that one has a checklist to ensure that practicalities are taken care of (e.g, resources, scheduling, and classroom management considerations). Furthermore, beginning teachers are often advised to script some sections for themselves, such as questions they might ask the students in order to get a discussion going at the beginning of the lesson. The expectation is that the teachers can and should depart from the script when appropriate; improvisation is definitely encouraged and the fact of having written it out in advance ensures that an adequate amount of thought has been put into it ahead of time. Another reason for including a great amount of detail is that student teachers are often required to submit lesson plans in advance to their mentor teachers or professors in order to receive feedback on their ideas. When creating the lesson plan it is usual to look at the following:

• The aims (the broader goals of the lesson, what it is reaching towards)
• The objectives (the specific, measurable outcomes of the lesson - the particular skills or knowledge students should have acquired by its conclusion)
• The number of attendees and the student-teacher ratio
• The previous knowledge of the learners (which may or may not be the same for all) and how this will be activated at the start of the lesson
• The motivation of the learners (school students, for example, have no choice but to attend so the teacher must build some kind of motivation into the lesson)
• The time required for each section of teaching and learning
• The resources required and available
• Catering for the different needs (cultural differences, learning styles, special needs) of the individuals
• How the lesson is to be evaluated.