Open a real box (or the display flatten) slowly so the class sees each face swing out. Take two or three hands-up answers for the face count, not open call-outs.

Hold back the word net for the next step — let a pupil offer it if it comes.

• Cube net — pause on the base before it folds; ask which square will be the lid before you reveal it.
• Cuboid net — point out the base and the opposite lid; the four remaining pieces wrap round as sides.
• Straight-line net — hold out for the prediction before you fold: do you think this one will close? Then let the overlap show them.
• Pyramid net — pause before the triangles rise and ask where their tips will end up; the class should predict a single point on top before you reveal it. Pupils return to this fold when they design their own pyramid later.

Talk this one through together — pupils take turns at the board and the class agrees or corrects out loud.

Before each Fold, ask the pupil at the board to name the two edges they expect to meet next. Let the class predict close-or-not with a show of hands before the reveal.

Build a few different arrangements as time allows — a neat cross first, then something less obviously right, so pupils reason about the fold rather than guessing from the outline.

This is the practice round — pupils take turns at the board, check each answer, and the class confirms before moving on. Keep the board work brisk rather than over-explaining.

Take a whole-class hands-up prediction before each Fold-and-check. The straight-line arrangement is the one most pupils get wrong — hold out for the reasoning (which two faces will meet?) before you fold it.