While Daniel is looking at different items under the magnifier at school, he accidentally knocks a basket of objects off the table. He thinks he has ruined the science lesson until his teacher, Ms. Harriet, explains that everyone makes mistakes. She stresses the important thing is to fix them and always learn from them. After school, Daniel and Prince Wednesday are at the bakery helping Mr. Aker make cookies. But Prince Wednesday accidentally spills the milk. No crying, though, because mistakes can happen. Part of the "Daniel Tiger's Neighborhood" series.