1
Open the dock and tap Number Line
A clean line lands on your board, zero to twenty out of the box.
Number Line
A number line you can resize, relabel and reuse.
Set the range, set the step, and get a clean number line the back row can read. Counting, negatives, skip-counting — without redrawing a wobbly one in marker.
Also called: interactive number line · counting line
- Free for teachers · no login required
- A free account keeps this board ready for next lesson
How it works
Three steps, zero setup
No setup screen, no import wizard — Number Line lives on the same board as everything else and it's running before the class has sat down.
The whole setup: tap it on the dock, drag it where the class can see it.
2
Set the range and step
Zero to twenty for counting, negatives for temperature, steps of five for skip-counting.
Highlight what matters
Mark a range on the line to show an interval, a jump, or where the answer must live.
Classroom ideas
Try it tomorrow
Three ways teachers actually run number line — steal one for tomorrow morning.
Where does it live?
Call a number and have students point to where it belongs before you highlight the interval. Estimation instinct, built daily.
Negative-number winters
Range −10 to 10 all winter, and plot the morning temperature on it. Negative numbers stop being abstract the first frosty day.
Jump the difference
Model subtraction as jumps: highlight from 37 back to 19 and count the hops together. The line shows what the algorithm hides.
Same dock, one tap away
Pairs well with
Every tool lives on the same board — these turn number line into a whole routine.
…and the rest of the dock is one tap away:
FAQ
Good to know
Can it show negative numbers?
Yes — set any range you like, negatives included. Temperature lessons approve.
Can I change the intervals?
Yes — any step size, so the same widget covers counting by ones and skip-counting by 25s.
Can I highlight a section?
Yes — mark a range on the line to show an interval or a jump between numbers.
Do I need an account to try it?
No — no login, no install. Your setup saves with the board on this device; an account is only for other devices.
Put a number line on your board
Open a board, tap the dock, and it's there. That's the whole setup.