A quantity line is a pictorial illustration of actual numbers. It’s mostly utilized in elementary math lessons to assist college students evaluate numbers and carry out arithmetic operations like addition, subtraction, division and multiplication.
The primary point out of utilizing quantity traces for understanding operations seems in John Wallis’ “Treatise of Algebra.” Wallis makes use of the visible of an individual strolling from level to level alongside a straight path to characterize the picture of counting from one worth to the following.
Utilizing this instance of somebody transferring ahead and backward, a quantity line makes essentially the most sense represented as a horizontal sequence of entire numbers, learn from left to proper.
