Introduce the lesson by welcoming the students and giving them an overview of the day's topic: how their brain helps them think and feel. Emphasize that there are two parts of the brain we're learning about today.

Explain the basic structure of the brain in a fun and simple way. Introduce the idea that different parts of the brain are like teams that help us in different ways.

Describe the two major parts of the brain: the upstairs brain, which is all about thinking and decision-making, and the downstairs brain, which is all about our feelings and reactions. Use simple language and maybe ask the students for examples of each.

Cue the video 'Why Do We Lose Control of Our Emotions?' as a practical illustration. Tell students to watch carefully and think about when they have felt each type of brain at work.

Prompt students to think about times when their upstairs or downstairs brain was in charge. This is a discussion slide. Encourage students to share their stories in pairs or with the class.

Conclude with a slide that invites students to review what they've learned and then participate in a short interactive quiz to check their understanding. Teacher can use this as a transition to assessments.