Number Line Diagram for Mathematics Education | Visual Learning Aid #3271371 (License: Personal Use)

This black-and-white diagram features a horizontal line marked with evenly spaced tick marks labeled 0, 1, 2, 3, and 4. A solid arrowhead at the left end signifies that the line extends infinitely in the negative direction. The clean, minimal design makes it suitable for classroom instruction or digital learning modules on number sense and integer operations.

Used in elementary and middle school math curricula to illustrate number sequencing, addition/subtraction directionality, and the concept of negative numbers; commonly appears in textbooks, worksheets, and interactive e-learning platforms.