aulas simuladas = mock teaching; mock lessons; simulated teaching/lessons
Potencialmente, duas interpretações para
1. aulas práticas = laboratory lesson; labs; experiments
2. aulas práticas = actual classroom teaching; real lessons
Provavelmente, sem mais contexto,
Teachers-in-training will (have to) conduct mock teaching and actual teaching. (or)
During their practicum, student teachers will...
Practicum = the period during which teachers-in-training work in schools doing their practice teaching.