The lesson plan aims to teach students about the parts of the tongue and their functions. It includes objectives to identify the main parts of the tongue and explain the functions of each part. The lesson proper involves motivating students by asking about what helps them taste food. Students will observe their tongues in mirrors and describe the shapes and motions they can make. They will learn that the tongue is covered in taste buds that can detect four basic tastes: sweet, sour, salty, and bitter. For evaluation, students will draw foods that exemplify each taste.