Orchestration graphs are a type of [[Educational modelling language|educational modelling language]] that brings together ideas from the [[Learning sciences|learning sciences]] and supports their translation into real scalable practice. It was created by [[Pierre Dillenbourg]] at EPFL. ## Orchestration engine An orchestration engine, is responsible for the operation and facilitation of the [[Learning design|learning design]] which was expressed through an orchestration graph. [[FROG|FROG (fabricating and running orchestration graphs)]] is the only one that exists (to my knowledge, as of date 22/9/2025). ## Summary In the book for orchestration graphs, it is divided into 42 points which I will summarise as follows (in the future). 1. Horizontal axis 2. Vertical axis 3. Topology 4. Activities 5. Edges 6. Skills and competencies 7. Control structures 8. Parallelism 9. Preparation edges 10. Set edges 11. Translation edges 12. Generalisation edges 13. Workflows 14. Aggregation operators 15. Distribution operators 16. Social operators 17. Social distance criteria 18. Back-office operators 19. Patterns of operators 20. Learner states 21. The states library 22. States transitions 23. Matrix entropy 24. Matrix utopy 25. Edge elasticity 26. Operators and matrices 27. Theory plug-ins 28. Cognitive diagnosis 29. Behavioural abstractions 30. Diagnosis entropy 31. The diagnosis axis 32. The modelling cube 33. Multidimensional predictions 34. Scope and space 35. The constraints library 36. The economy of evolution 37. Graph adaptations 38. Graph repairs 39. Self-improving systems 40. Participatory graphs 41. Orchestration load 42. Classroom utility