formation (1) temps (durée) (1) spectacle (1) expérience scientifique (1) Context (1) Counting (1) Case (1) Acquisition (1) Correspondence (1) Correspondence (1) Training (1) Time (1) Performance (1) Memory (1) Letters (1) Learning (1) Grammar, Comparative and general--Case (1) Explanation (1) Equations (1) Counting (1) Case (1) Beginning (1) Adulthood (1) Ability (1) Opportunity (1) Knowledge and learning (1) Use (1) Practice (1) Performance (1) Training (1)