This is a great activity to engage and get the interest of your students as they begin learning the differences between physical and chemical digestion. First the students will complete a “Commit and Toss” paper. Without putting their name on the paper, they feel free to commit their answers to the 9 questions about the digestive system, wad it up and toss it across the room. On your signal, every student will retrieve a wadded paper, straighten it out and wait for someone to read the first question. I usually do the first one then call on students or volunteers to read the rest. I have already placed around the room the letters A, B, C and D. After the question is read the student must go to the answer that is on the paper that they picked up not necessarily the one they chose earlier. You then reveal the correct answer and teach as much as you want about the difference between physical and chemical digestion. Repeat until all questions are discussed. Students head back to their seats to fill in a Venn diagram. They cut in strips the14 examples of digestion and decide whether it is physical, chemical or both. I usually like to check them before they glue them down. Students then put it in their interactive notebook for future reference.