Number line presets
Start quickly with 0-20, negative, 0-100, decimal, fraction or open number lines.
Free maths tool
Number line tool
A free interactive number line for modelling whole numbers, negative numbers, decimals, fractions, open lines, hidden labels and jumps.
Hidden labels
Show all labels, ends only, tick marks only or hidden middle labels for discussion and student prediction.
Fractions and decimals
Model halves, thirds, quarters, fifths, eighths, tenths and decimal steps on the same workspace.
Jumps and markers
Move the marker, set a point, add jumps left or right, choose random points and use centre zero.
What the tool does
The number line tool gives teachers a reusable way to model position, order, distance and equal intervals without redrawing the line for every example.
- build whole-number, negative, decimal, fraction and open number lines
- set a custom minimum, maximum and tick step
- hide labels so students can reason about missing values
- drag or set the marker to a chosen point
- add jumps to model counting, operations and distance
How teachers use it
Open it on a projector or interactive whiteboard, choose the line type, then ask students to read the scale before moving the marker or adding jumps.
- start with a familiar 0-20 or 0-100 line while students learn the scale
- use ends-only or hidden labels when students need to infer missing values
- switch to fractions or decimals when equal spacing is the teaching point
- use jump left and jump right to connect counting, addition and subtraction
Why it is useful
A number line makes the size and position of a number visible. Students can see the distance between values instead of only reading a list of labels.
- supports whole-class number talks
- connects number order with distance and scale
- works for modelling before students move to independent practice
Frequently Asked Questions
Is the number line tool free?
Yes. Teachers, students and families can open the number line tool in a browser for free.
What number lines can I make?
The tool includes 0-20, negative, 0-100, decimal, fraction and open number line presets, plus custom range and step controls.
Can I hide labels for students?
Yes. You can show all labels, ends only, tick marks only or hidden labels so students can reason about missing values.
Does it record student work?
No. It is an open modelling tool, not a scored practice activity or student-tracking page.