This math topic focuses on identifying the correct number lines based on how a whole number is divided into specific intervals, primarily utilizing improper fractions and interval spacing. The problems challenge learners to determine the number of intervals a whole number is divided into, ranging from 2 to 4 intervals per number line. This set of problems is a practical exercise in understanding the graphical representation of fractions and intervals on number lines. Additionally, this subject is part of a broader unit on mixed fractions, enhancing students' fractional understanding in various real-world contexts.