Lead with plain definitions—then earn depth in the panels

Say what it is before why it matters

A crisp sentence naming the concept anchors attention. Metaphor and banter land better once the anchor exists.

Coy openings confuse fatigue readers faster than they impress reviewers.

Headings that match how people ask

If you teach osmosis, mirror natural classroom questions in section titles—then unpack visually.

Burying the definition under lore wastes class time.

Revise openings when syllabi shift

Exam boards rename topics; refresh intro copy accordingly so Education browsers see accurate framing.