Variables and constants are super important in math. They help us understand and describe real-life situations.

Examples:

• Variables: These are the things that can change. For example, temperature can change, so we use $t$ for temperature, and distance can change too, so we use $d$ for distance.

• Constants: These are fixed numbers that don't change. A good example is the number of days in a week, which is always 7.

How They Work Together:

Let’s look at the equation $d = rt$.

Here, $d$ stands for distance, $r$ is the speed (which can change), and $t$ is the time (which is fixed).

When we change the speed $r$, we can see how it affects the distance $d$.

Understanding this connection is really important for solving problems!