STEM means Science, Technology, Engineering, Math. It is an acronym that was used by the National Science Foundation in the early 2000s to describe the field of education in regards to science. It started to make headlines in 2008 and has been a topic of education since then. Schools started to adopt and gain grants for adopting STEM. Not too long ago, this realm has started to embrace the creative brother. One of the founder of STEM claims to unify both as follows: Science and Technology, interpreted through Engineering and the Arts, all based in elements of Mathematics, thus STEAM came to be.
I embrace this integration. I see the end of all the disciplines as tools for innovation, which is creativity. In my life, creativity is the joining point of technology/science and design/communication(expression), and the reason why I was attracted to both the arts and technology.
Here is an organization called SteamToStem
Check out the infographics on the difference between STEM and STEAM made by the University of Florida. I found it on upworthy.com