When a toy train display featuring a model replica of City Town is ruined, Sparks' Crew sets out to learn more about the landforms that make up City Town and help to rebuild a new replica. Curriculum: Many different types of landforms can make up an area. / AJ invents a gadget that switches everyone's powers. But, having different powers is harder than they thought. How can they use their new powers to get their old powers back? Curriculum: When you need information to solve a problem, you can ask an expert.