If something lessens or is lessened, it becomes less strong: A healthy diet can lessen the risk of heart disease. SMART Vocabulary: related words and phrases. Becoming and making smaller or less.
A demonstration lesson is simply a planned lesson for a group of students. It is most effective to observe a candidate teach a lesson to students and not to the members of the Selection Team. This section of the toolkit provides an overview of the process and procedures for conducting demonstration lessons.