LEGO SERIOUS PLAY California | Serious Change

Better conversations don't automatically lead to better decisions.
This community connects facilitators, consultants, educators, and organizational leaders across California who want to make thinking visible, challenge assumptions, and navigate complex organizational challenges.
We offer in-person LEGO SERIOUS PLAY Facilitator Certification programs following the standards of the Association of Master Trainers (AMT), established by the method's original developers.

### Meet Our Trainers

Gloria de León
AMT Trainer of Facilitators | Founder, Ad Hoc Advisory
An organizational change specialist with extensive experience in corporate leadership, strategy, and organizational transformation. Gloria brings a practical, decision-oriented approach to facilitation, helping teams expose hidden assumptions, navigate complexity, and translate conversations into meaningful action.
Michel Cloosterman
Professional Development Provider | LEGO SERIOUS PLAY Practitioner | AMT Member
Michel specializes in professional learning and development, supporting educators, professionals, teams, and organizations through experiential, hands-on approaches to learning, collaboration, and change.
Matthias Renner
AMT Trainer of Facilitators
Matthias brings expertise in LEGO SERIOUS PLAY facilitation and professional facilitator development, helping practitioners explore the methodology and its applications to complex organizational challenges.

### What You'll Find Here

• Four-day, in-person LEGO SERIOUS PLAY facilitator certification programs across California.
• Professional conversations about leadership, organizational change, strategy, and decision-making.
• Opportunities to explore the method and connect with experienced practitioners.
• A professional community committed to rigorous, purposeful facilitation.

Not entertainment. Not another team-building activity. A rigorous methodology for making thinking visible.
Explore upcoming certification programs:
https://serious-change.info
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