The document provides instructions for building molecular models of biomolecules through dehydration synthesis and hydrolysis. Students will construct models of glucose and then combine two glucose molecules through dehydration synthesis to form a disaccharide, modeling how glycogen is formed in the body. They will then reverse the process through hydrolysis, adding a water molecule back to separate the two glucose units, as occurs when glycogen is broken down into glucose. Students are asked to write definitions of dehydration synthesis and hydrolysis in their journal.