Imagine a straight line stretching out in both directions forever. That’s a number line! Now picture some whole numbers sprinkled along it0, 1, 2, 3, and so on. But wait, there’s more! We also have their opposites: -1, -2, -3, and beyond. These numbers, both positive and negative, are integers.
Understanding integers is like unlocking a secret code to math! They help us understand concepts like temperature (above and below zero), money (having it or owing it), and even elevation (above or below sea level). A number line is the perfect visual tool to bring these concepts to life!