While Daniel is looking at different items under the magnifier at school, he accidentally knocks a basket of objects off the table, sending things tumbling all over the floor. Whoops! Daniel thinks he has ruined Science Time until Teacher Harriet explains that everyone makes mistakes; the important thing is that we can fix them and always learn from them. In the next segment, Daniel and Prince Wednesday are at the bakery helping Baker Aker make cookies for the Neighborhood. But Prince Wednesday accidentally spills the milk! No crying, though, because mistakes can happen. Soon the boys learn that they can try to fix their mistakes and learn from them, too. Trolley cookies for everyone! Part of the "Daniel Tiger's Neighborhood" series.