What a great question! There is actually a forum thread on this topic that you should check out: https://my.nsta.org/forum/topic/K!plus!eFEQulldQ_E
It is called, 'STEM AND SPECIAL EDUCATION' UNDER THE STEM FORUM.
I did a search in NSTA using the words 'special needs and STEM'. I was pleasantly surprised at how many resources popped up. Here are a couple you might be interested in perusing:
Connecting STEM with Learning: https://www.nsta.org/connected-science-learning/connected-science-learning-april-june-2019
Better Together: https://www.nsta.org/connected-science-learning/connected-science-learning-april-june-2019/better-together
I am sure others will have other resources to share - such an important consideration in lesson planning - to plan for ALL of our students' success
when STEMming and STEAMing :-)