
Criterion B — Inquiring and designing — asks students to write a question, form a testable hypothesis, pick their variables, and design a method before they ever touch equipment. Most students can run an experiment; far fewer can design one that earns top levels. That gap is usually about structure, not science. In this session we'll cover: - The Criterion B strands unpacked: what "explain," "formulate," and "design" demand at each achievement level - The hypothesis trap: why "I think X will happen" caps a student's level, and what a testable, scientifically reasoned hypothesis looks like - Variables done properly — independent, dependent, controlled — and how examiners read them - Marking practice on real student-style investigation plans, live - Task and scaffold ideas you can reuse across Biology, Chemistry and Physics For MYP Sciences teachers of all year levels — whether you teach integrated sciences or a single discipline.