There are numerous reasons to use number lines to teach positive and negative numbers. Which of the following is not one of those reasons?


A. Number lines can be used with non-integer values (for example , -4.5).

B. Number lines match several familiar situations, like altitude, temperature, and football.

C. Number lines can be used to show the relative size of negative numbers.

D. Number lines are easier for students to comprehend because they are familiar.