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Dice Count flashes a handful of dice on screen and takes them away before you can count the pips one at a time. You then type the total. Fifteen rounds, each with its own timer. The whole point is that deliberate counting is too slow — you have to recognise dice faces as quantities and add the quantities.
Dice flash on screen for a short moment.
They vanish — no second look.
Type the total number of pips.
Submit before the round timer runs out.
Fifteen rounds; your score is correct totals.
Subitising and rapid addition. Subitising is the instant recognition of small quantities without counting — most people manage it up to four items. Dice faces are designed to be subitised, and this drill pushes the habit of reading them as numbers rather than dots.
Read each die as a number, never as pips. A five is 'five', not a pattern to count.
Pair dice that sum to ten and set them aside mentally. Tens are free to add.
Add as the dice appear rather than after. There is no time to start once they are gone.
If you miss one die entirely, guess an average of 3.5 for it rather than abandoning the round.
The instant recognition of a small quantity without counting. Almost everyone can do it up to about four items, and dice faces are laid out specifically to be read that way.
Long enough to see all of them, not long enough to count pips individually. That is the design.
It is one of the better number-sense drills for children, because it discourages counting on fingers.
Beyond about four dice, you are doing serial addition under a timer, which is a different and harder task than reading one glance.