Chester Digestion will be your guide on this tour from the mouth, into the esophagus and through the digestive system * Students learn how the body uses the food for fuel & how digestion takes place through the functions of the stomach, gall bladder and the pancreas * Questions at the journey’s end test the student’s comprehension. * This CD-Rom is compatible with Windows XP or earlier and Mac OS or earlier (not compatible with Inter-based Macintosh computers)