What happens to the sandwich in the digestive system? Title: Digestive System Learning Intentions: What happens to the sandwich in the digestive system? Identify the parts of the digestive system. Describe the roles of the organs of the digestive system. Create a model of the digestive system.

Brainstorm how the sandwich is digested in the human body. Images from google “labelled for non-commercial reuse with modification ”

The Parts of the Digestive System: Mouth Oesophagus Liver Stomach Large Intestine Small Intestine Images from google “labelled for non-commercial reuse with modification ” Rectum Anus

The food is stored and churned in the muscular organ. Task: Place the labels into the correct order of events. Students could use these external links as a guide. Adobe flash required. Food molecules are absorbed into the bloodstream. Bile produced in the liver helps to digest fat. Digestive enzymes produced in the pancreas helps to digest food. Water is absorbed into the bloodstream leaving solid waste material called faeces behind. Food is forced down the food pipe from the mouth to the stomach using muscular action. Ingestion happens here. Teeth cut and grind the food into smaller pieces. Saliva helps soften the food. Saliva also contains an enzyme called amylase. Amylase breaks down starch and turns it into maltose (a sugar).  Egestion happens here. The food is stored and churned in the muscular organ. Hydrochloric acid kills any bacteria. Chemical and physical digestion continues. Images from google “labelled for non-commercial reuse with modification ”

Task: Place the labels into the correct order of events. Small Intestine Large Intestine Oesophagus Mouth  Anus Stomach Images from google “labelled for non-commercial reuse with modification ”

There are two types of digestion. Physical digestion - involves physically breaking the food into smaller pieces. Chemical digestion – involves the use of enzymes to break down larger food molecules into smaller food molecules. Think – Pair – Share: Complete the table below to identify where chemical and physical digestion occurs. Chemical Digestion Physical Digestion

Create a Model of the Digestive System. Success Criteria A poster display visually represents the main parts of the digestive system. The digestive system is well labelled and is an accurate scale model of the digestive system. Students record the function of the mouth, oesophagus, stomach, small intestine, liver, pancreas, large intestine, rectum and anus. Using video recordings, students creatively model the function of the mouth, oesophagus, stomach, small intestine, liver, pancreas, large intestine, rectum and anus. The stages of digestion are sequentially correct. A QR code linking to their video is attached to their poster. See here for sample model. Students design an experiment which demonstrates the chemical digestion of starch into maltose. Students design an experiment which demonstrates the absorption of food nutrients into the bloodstream through the villa in the small intestine.