Stems and Leaves
Every two-digit score splits in two: the tens digit is the stem, the ones digit is the leaf. Put each leaf on its stem, and the whole pile of numbers lines itself up.
No score is kept. No points, no streak, no ranking — the only number anyone writes down is the one your teacher writes down, standing next to you.
Watching one first is a strong way to start.
Key: 2 | 3 means 23
- 123 · 40 · 12 · 28 · 21 · 34 · 15 · 23 · 31 — Quiz scores. Write each ones digit in its tens row, smallest first.1234
- 2Which is the biggest score on the plot?
- 3How many scores land between 20 and 29?
- 4Which score is right in the middle — the same number of scores below it and above it?
- 530 · 14 · 41 · 26 · 17 · 35 · 22 · 45 · 33 — Quiz scores. Write each ones digit in its tens row, smallest first.1234
- 6Which is the biggest score on the plot?
- 7How many scores land between 30 and 39?
- 8Which score is right in the middle — the same number of scores below it and above it?
There is no right answer here. It only tells your teacher where to start next time.
You built it, and then it answered you.
A stem-and-leaf plot is the data itself, standing in order. No score disappears into a bar or an average — so the biggest, the count, and the middle are all just sitting there, waiting to be read.
The stretch is a choice. Taking it — or leaving it for another day — are both strong moves.
Send your teacher the summary?
One row: how many you did, hints, confidence, and the name you type below. Nothing else — and only when you tap the button.
For the teacher — this device only
One probe row, built from what happened on this screen. Nothing is sent anywhere — copy it into the Goal Builder yourself, or print this page. Independent means built or answered with no hints; supported means after a hint. Both are real evidence and neither is a grade.
- Date
- —
- Skill
- Build a stem-and-leaf plot and read it
- Measure
- Trials (x of y)
- Independent
- 0 of 8
- Supported
- 0 of 8
- Hints used
- 0
- Confidence
- —
- Watched the demo
- —
- Stretch
- —
Send the row to your Sheet
Same row as above, one tap, one append — no de-duplication exists on the Sheet, so send it once.
Items 1 and 5 deal the cards and build the plots; 2–4 and 6–8 read them — the biggest score, a decade count, the middle score. Set 2 and Set 3 are the same eight skills with different numbers, so the same student can be probed three weeks running without being measured on memory.