Wendy, What a great idea! As a preservice secondary science teacher, I absolutely love that you are using STEM in a fun interactive way. Using super heroes as a theme was genius, especially as you can draw on connections with engineering and Iron Man. I personally think you are heading in the right direction, making STEM fun for students so that when they reach the high school level, they are even more interested to learn the content! How were you able to convince your administration to have such a day?