The Magic School Bus Season 3 Episode 12 - The Magic School Bus Rocks and Rolls Episode Title:The Magic School Bus Rocks and Rolls.Episode Description:The class is building a statue of Captain Walker, their city's founder. Captain Walker left instructions on how wanted this statue made in the form of a poem. Ms. Frizzle's class interprets the meaning he wants it made without the use of hands a little too literally. However, the statue breaks off the top of the mountain, and falls down. The Friz turns the bus into a rock and follows. Water erosion reduces the statue to a head by the time they reach the bottom. Desperate to get to the ceremony, the bus cracks open a dam of rocks that has formed and slides down the mountain. However, they found that somehow they made the mountain into a statue of Captain Walker's head and realize that Captain Walker wanted his statue made through erosion.