Going Deep: STEAM in the Connected Classroom
This is a quick intro and example of what can be done to lightly introduce STEAM projects into your classroom.

STEAM – description, ideas and resources for educators (from Discovery Education)
This is a more detailed description of an engineering-focused approach to STEM/STEAM. It comes from the Discovery Education website, and emphasizes the engineering design cycle. There is also an additional list of 21 resources.

Six Characteristics of a Great STEAM Lesson
This introduction is even more comprehensive than the previous ones AND it includes the arts, making it STEAM. Included in this article are links to two additional valuable articles: “12 Steps to Great STEM Lessons” and “Perfect STEM Lessons”.

Incorporating STEAM in All Classrooms: How STEAM Relates to all Educators
This explains why STEAM is meaningful and relevant to students today and encourages teachers to include STEAM and project-based learning in their curriculum, because STEAM “embraces the very subjects that regularly influence and impact students in their everyday lives”.

The 10 Best STEAM Resources: Science, Technology, Engineering & Mathematics Resources for preK-12.
This includes both curriculum development resources and professional development resources. It is a good collection of general STEM resources put together by the NEA (National Education Association).

This is for Processing, a computer language primarily for visual artists, designers, etc. it is based on Java and is fairly straight-forward. There are a ton of resources on the page, and has a huge following of developers. Also, educators may be able to get the book that was written by the creators, Reas and Fry, for free from MIT Press. The videos are really informative.

This is for Adobe Spark. Spark is actually three separate apps (one for video, another for presentations, and another for graphics and subtle animation) that have been rebranded under one umbrella. They are really intuitive and are useful for teaching elements of design and video production.

Also, check out some other open source creative software. The should all be free. Here is a small list:

Gimp (like photoshop)
Inkscape (like illustrator)
Scribus (like InDesign)
Da Vinci Resolve (video editing)
Aptana Studio 3 (web)
Blender (After Effects, and pretty much anything else you want to do)
Audacity (audio)

New Digital Tool Helps Teachers Locate STEAM-Related Materials

STEM Education: Over 25 STEAM Links Filled With Resources and Information