The sequence "0, 1, -1, 2, -2, ..." is a simple pattern of numbers that includes both positive and negative values, along with zero. It starts at zero, then moves to one, followed by negative one, and continues alternating between positive and negative numbers. This pattern helps us understand how numbers can be both above and below zero, which is important in mathematics and everyday life. These numbers are part of the set of integers, which includes all whole numbers, both positive and negative, as well as zero. Understanding this sequence is essential for grasping concepts in algebra, number theory, and even in real-world applications like temperature changes or financial calculations.