An open number can be used effectively for thinking about addition and subtraction.All of the reasons below support the use of an open number line EXCEPT:
A)Is less flexible than a numbered line.
B)Eliminates confusion with hash marks and spaces.
C)Less prone to computational errors.
D)Helps with modeling student thinking.

Question

Quizplus · Accepted Answer

The statement "Is less flexible than a numbered line" is not a reason that supports the use of an open number line. In fact, open number lines are known for their flexibility and ability to accommodate a range of numbers and operations.

An Open Number Can Be Used Effectively for Thinking About