Answer :
The tool is number lines to support development of students
What is meant by Number lines?
Number lines: A number line is a horizontal line that has equally spread number increments. The numbers included on the line will determine how the number on the line can be answered. The question that goes with the number determines how it will be used, for example, plotting a point.
Research recommends that teachers use the following pedagogical tool to support the development of students' understanding that fractions are numbers and that they expand the number system beyond whole numbers.
The tool is number lines because a number line can be used to demonstrate the addition, subtraction, division, and times table questions. Also, the number line will help you to understand the concept of negative numbers
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