Activity 15a – Digestive System

• Station lab activity that has students investigate the organs, histology, diseases, and characteristics of the digestive system. The length of the digestive system will be simulated with string, the time from swallowing until it reaches the stomach will be measured, and a simulated fecal occult blood test will be performed. Charts/information are provided for each station.

Activity 15b – Bacteria in Food

• Lab activity in which students observe the amount of bacteria that develops in yogurt or milk left out for different periods of time. Students act as a family physician educating a patient on the importance of refrigeration to deter bacterial growth in milk products.

Activity 15c – What’s in Your Food

• Lab activity that has students investigate nutritional facts, choose a favorite meal and measure out the amount of fat, salt, and sugar in their favorite meal. Meals are then compared among the class.

Items included in this lab are listed below.

Fecal Occult Test Sheet, Phenolphthalein, Stool Samples A & B, Yarn, Cotton Swabs, Methylene Blue, Plastic Pipettes, Mineral Oil, Lard, Sugar, Salt, Beans.