A 90-minute experiential PD session for educators of PK to 5 learners. Each educator builds their own Art Machine, then unpacks the engineering design process, the simple-to-compound-machine progression, and a coaching playbook for hands-on STEAM facilitation. Educators leave with a class pack (25) of Art Machines for their own classroom, the Art Machines slide deck, a quick-start guide, three iteration prompts they can reuse with any maker activity, and a clear plan for running their first session.