Take three hands-up answers, not open call-outs. Give five seconds of quiet think-time first.

Listen for pupils reasoning from size (the half is clearly the biggest) rather than guessing. Revoice a strong answer: so the size of the slice tells us the size of the group.

• Half, quarter, quarter — point to the half-slice filling half the circle; the two quarters each fill a quarter.
• Equal halves — 'both fill exactly half — what does that tell us about the two groups?'
• 12, 6 and 2 out of 20 — this is the hard one; hold for a pupil to name 12/20 before revealing the percentage. Note the three percentages sum to 100%.

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

Have individual pupils step each category up to its count. As each slice grows, pause and ask 'what fraction of 20 is that?' before reading the percentage the tool shows. Build the sandwich bridge visibly first: 8 out of 20 → 8/20 → 40%. Then wrap 6/20 = 30%, salad 4/20 = 20% (and 4/20 = 1/5), soup 2/20 = 10%. Finish by adding the four percentages aloud to reach 100%.

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.

The first two are access-level (halves and simple thirds). The third forces reading three unequal slices. The fourth adds a fourth slice, so pupils must check all four percentages sum to 100%. Save the one-fifth prediction for the last table only, since it is the only one with a fifth: prompt 'the 8 and the three 4s — which is exactly one fifth?' (each 4 is 4/20 = one fifth).