Look at the front. Your teacher will turn slowly all the way around, back to the start. Then only halfway. Then only a quarter of the way.

How much of a full turn was each one? Which way is your teacher facing now?

Watch the card clock hand at the front. It is pinned at the centre, so it can only turn around that one fixed point. Watch each turn and notice where the hand ends up:

• A full turn goes all the way around, back to twelve where it began.
• A half turn points the hand straight down.
• A quarter turn points the hand to the three.
• A three-quarter turn goes three quarters of the way round, to the nine.

Watch for how far the hand travels each time, and where it stops.

You each have a turning arm, two strips joined with a split pin so they swing around a fixed point.

For each one: say where the arm will end up pointing, then make that turn on your own arm, then compare it to the board pupil's arm to check.

Today we fit pattern blocks into gaps by turning them the right amount. Each gap is a paper outline drawn around a block that was placed turned to one side, so the block only slots in once you turn it to match the outline.