Subitize quantities 1-5 (perceptual) and 6-10 (conceptual)
Exercise Difficulty 3 ~1 min math.gK.f.ns.subitize.ex_02

Ten Frame Flash

Prompt

I will flash a ten-frame for 3 seconds. Tell me how many — and tell me HOW you saw it.

M-K-F-EX-06-A Chart
Reference card showing the 3 ten-frame flash images: ten_frame_7 (top row 5 + bottom row 2), ten_frame_4 (top row 4 + bo

Reference card showing the 3 ten-frame flash images: ten_frame_7 (top row 5 + bottom row 2), ten_frame_4 (top row 4 + bottom row empty), ten_frame_9 (top row 5 + bottom row 4). All in standard top-fills-first arrangement, 8"x4" each.

How it's presented
mode flash card sequence
cards
ten_frame_7ten_frame_4ten_frame_9
duration ms
3000
Answer criteria
type sequence match with explanation
explanation rubric
Names the 5-anchor decomposition (e.g., '5 and 2 = 7')
expected quantities
749
Hints
  1. How many in the top row?
  2. How many in the bottom row?
Misconceptions to watch
  • Counts each dot one by one (no use of 5-anchor).
  • Says 'I saw 7' but cannot explain HOW.
Used in lessons