Constructive chaos, carefully supervised

I design playful
learning experiences
(and the occasional
contraption)
that make people feel
clever.

I’m Mark Calleja (a.k.a. MrC), a rogue pedagogue and creative technologist. I make projects, tools, and workshops that help people feel clever, capable, and up for having a go.

A lot of my work starts with “I can’t do this” and ends with “hang on, I just made that.” I take the same approach to AI: helping people use it in ways that are useful, playful, and genuinely illuminating.

AI warning poster

What I do (on purpose)

Learning

Engagement-led learning design

Curriculum, activities, and resources that start with curiosity, add just enough challenge, and end with confidence.

Making

Playful computing & prototyping

Hands-on builds, tiny experiments, and interactive demos that teach concepts without the lecture fumes.

People

Workshops & facilitation

Sessions that feel like a game, stay inclusive, and still land the learning outcomes (yes, really).

Currently

Building Code Club Projects: the sneaky kind of education.

I work with brilliant humans to ship coding projects and learning pathways that are practical, accessible, and unapologetically fun. My special move is making the learning feel like play — without losing the rigour. I call it 'hiding the vegetables'.

Current work visual