Differentiated group task - Separating Mixtures

This is a task I give students at the end of the separating mixtures unit - the students are grouped into ability groups (Squid = HIgh, Crab = Mid, Starfish = Low) I show them a sample of dirty Rock salt - their task is to plan how to separate a sample of pure salt from the rock salt using these planning sheets - I blow them up to A3 to give them plenty of room to write on as a group