- Definition
A double number line is like two rulers placed side-by-side, where you can see how numbers on one ruler relate to numbers on the other, often showing a pattern like doubling or tripling.
double number line is a term used in Ontario’s Kindergarten to Grade 8 curriculum.
The descriptions on this page are SmartStudy’s own original, plain-language writing — not the Ministry’s wording. They are aligned to the Ontario Curriculum, © King’s Printer for Ontario. For the Ministry’s official wording, see the source link below. SmartStudy is an independent service and is not affiliated with, endorsed by, or sponsored by the Government of Ontario or the Ministry of Education. Ontario Curriculum and Resources ↗