Which method is NOT used to evaluate the effectiveness of a lesson?

Ignoring lesson objectives is not a valid method for evaluating the effectiveness of a lesson. Effective teaching requires a clear understanding of the intended learning outcomes, and ignoring these objectives would mean there is no basis for assessing whether the students have met the expected standards or gained the necessary knowledge and skills.

To evaluate a lesson's effectiveness, it is essential to use methods such as student feedback, which provides insights into the students' perceptions and experiences; assessment scores, which quantitatively measure student understanding and performance on the lesson content; and self-reflection on teaching practices, where educators critically assess their instructional strategies and adjust accordingly. By focusing on lesson objectives, teachers can make informed decisions about their teaching and the students' learning needs.