This engaging 90-minute biology lesson introduces Grade 9–12 students to the human digestive system using the video “How the Digestive System Works”.
Students begin with a thought-provoking discussion to activate prior knowledge, followed by a focused video viewing with note-taking. The teacher then breaks down each organ’s role in digestion, using diagrams and relatable analogies to deepen understanding. Students work in pairs to label the digestive system and map the journey of a sandwich through the body. Individual activities reinforce key vocabulary, the sequence of digestion, nutrient absorption, and common digestive issues. Students reflect on fun facts, such as why stool smells and how stomach acid functions. The lesson concludes with a class review of answers and an exit ticket for personal reflection.
This lesson blends visual, collaborative, and critical thinking strategies to ensure students not only understand the process of digestion but also appreciate how their own dietary habits affect their health. It’s a hands-on, informative, and memorable exploration of a vital body system.
