Robin is trying to teach the Titans about patience and why it is important. The Titans struggle with being patient and they fail each test Robin gives them.
Beakman explains that bread is an important food staple and there are different kinds of bread. He uses an animated clip to give some history of people creating bread. Then he explains the science behind how bread is made. Beakman uses a demo of yeast with water and sugar to show that yeast are living and create carbon dioxide and that's how bread rises.