READY TO TEST
Mental Math
Solve in your head before the clock runs out.
10 CHALLENGES
Take the test Three addition tasks, three multiplication tasks, three divisions and one mixed finale.
NUMBER SENSE
Number sense.
A quick glance. A thousand possibilities.
Find out how well you feel a quantity before counting it.
CHOOSE YOUR BENCHMARK
How many did you see?
10 measured rounds in each test.
Discover a different side of your intuition.
READY TO TEST
Dot Flash
A brief flash of dots. Estimate the quantity with a slider that builds your own dot pattern as you move it.
10 CHALLENGES
Take the test Three stages grow from easy to hard: estimate all dots, filter by color, then hold the image in memory. Glimpses last 1.2–2.4 seconds, with 6–320 green dots across the set.
DOT FLASH · FOUR STAGES
From a handful to a field.
Estimate quantity, then filter by color.
From round 7, hold it in memory without a preview.
- ROUND 01
6–10
1.2 s flash
Visual helper - ROUND 02
16–24
1.5 s flash
Visual helper - ROUND 03
35–50
1.8 s flash
Visual helper - ROUND 04
8–12
1.6 s flash
Visual helper - ROUND 05
24–40
1.8 s flash
Visual helper - ROUND 06
60–90
2.0 s flash
Visual helper - ROUND 07
12–18
1.8 s flash
Memory only - ROUND 08
40–65
2.0 s flash
Memory only - ROUND 09
110–160
2.2 s flash
Memory only - ROUND 10
220–320
2.4 s flash
Memory only
How Dot Flash works
The original pattern appears briefly, then disappears behind a neutral mask. Adjust the slider to estimate how many dots you saw. In guided rounds, your estimate draws a new arrangement of dots so you can judge its quantity. From round 4, count only green dots and ignore orange dots. From round 7, the memory delay grows and the preview is hidden until you answer.
Every run generates new quantities and layouts. A new mechanic starts with fewer dots, then grows from easy to hard. Glimpses last 1.2–2.4 seconds: enough to take in the pattern, with less time for counting the smallest groups.