# MyGermanBD — Beginner German Practice

> Beginner lessons, German/English/Bangla vocabulary scheduling and study planning. No proficiency certification, verified admission or visa guidance.

- Canonical URL: https://mklearn.co.education/
- Methodology & Equations: https://mklearn.co.education/methodology/
- Interactive Browser Runtime: https://mklearn.co.education/run/
- Author & Root Entity: Mohammad Rezwan Khan, PhD (https://mrkhan.co.technology/#person)
- Ecosystem Directory: https://mklab.co.technology/
- Knowledge Graph JSON-LD: https://mklearn.co.education/knowledge-graph.jsonld

## Governing Mathematical Formulation & Units
- Formula: `Vocabulary Retention Bucket B_{t+1} = min(B_max, B_t + 1) on exact article + plural recall; reset to B_1 on gender/case mismatch`
- Units: Trilingual vocabulary cards (Deutsch with der/die/das + plural, English, বাংলা); study blocks in minutes/week.

## Reproducible Worked Example
Noun Gender & Case Drill: Practicing 'der Fahrplan / die Fahrpläne' (schedule — সময়সূচী) and 'Akkusativ vs. Dativ' prepositions verifies whether the learner recalls both the grammatical gender article and verb-second (V2) word order ('Morgen fahre ich nach Berlin'), logging results in the local study planner.