So, STEM is not entirely about coding, but coding can be a great introduction into the field. And, with a projected 1 million surplus of CS jobs by 2020, there's a huge demand for more students!
If that is not enough motivation to try your hand at coding or the integration of STEM into other fields, check out my list of favorite computer science agencies and resources. It's not all about the learning tools, but the support tools!
Check out fennovation.org for more STEM resources!