
Maria
B1 · Business English
Lessons
47
Skill dimensions
23 × 2 modes
Signal extraction from a tutoring session.
Collection
Signal extraction from a tutoring session.
Transcript
Extracted Signals
These signals update the learner's skill graph.
Learner Graph
9 skill nodes across 4 categories. Each tracked in two modes: receptive and productive.
From the updated graph, the engine selects the next activity.
Action
Autonomous content selection. The engine scores urgency for every skill, selects a candidate, and prescribes the next activity.
Urgency Scores
Conditionals
1.92weakness
0.63
staleness
1.2
trend
1.08
preference
1.0
exploration
0.02
Selection Pool
Weighted random selection from top 3 candidates
Conditionals
Prescription
Skill
Conditionals
Expressing real and hypothetical conditions, consequences, and imagined situations
Phenomenon
GRAM-B2-213
Difficulty
B1
Interaction Type
ai_avatar
Context
business_negotiation
TO TALK ABOUT AN IMPOSSIBLE SITUATION — 'IF' + PAST PERFECT SIMPLE and 'WOULD HAVE' + '-ED' in the main clause to imagine a different past
Available interaction types
When Maria completes this, new signals feed back in.
The Loop
Collection
100 signals
22-skill extraction pipeline
Learner Graph
23 × 2 dimensions
Event-sourced, time-decaying
Action
1 prescription
Autonomous content selection