This is a hands on lesson designed to reinforce knowledge about human digestion. In this lesson students are guided in a hands on simulation from mouth until rectum with actions and jobs to do along the way. It is a very hand on approach which is very ELL friendly and makes very tangible connections between the parts of the digestive system and the simulation. I have used this lesson for the last 5 years and it is always a highlight for my students. If you buy it includes a student worksheet that asks students to ponder "what if" style questions and rigorous application of their knowledge of the digestive system.