Bar Model
A bar model for word problems: part and whole, comparison, equal parts and times as many. The unknown can be in any place, with a story, the calculation and the same calculation with the unknown.
Free, runs in the browser, no sign-in or installation.
- Subject
- Mathematics
- Area
- Numbers
- Level
- Primary school
What you can do
- Four kinds of problem: part and whole, comparison, equal parts and times as many.
- Tap any number in the picture to make it the unknown; the calculation changes, e.g. 12 − 7 = ? and 7 + ? = 12.
- Each model comes with a story, and Another story changes the context.
- New task picks the numbers and where the unknown is; the answer stays hidden until you reveal it.
- Download the model as a PNG with a white or transparent background.
Worksheets and lessons
Lessons with worksheets that use this app.
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