Fractional calculus is like a special type of math. It's like regular calculus (which means the study of how things change) but it looks at things a little differently. It looks at how the change in something can be different at different speeds.
Instead of just looking at regular numbers (like 1, 2, 3, etc.), fractional calculus looks at fractional numbers (like 1/2, 1/3, 1/4, etc.). When we look at things using fractional calculus, it can help us understand how things change in more complex ways.
For example, if you throw a ball, it will move in a curved path. Regular numbers can help us figure out the path it takes, but fractional calculus can help us to figure out how fast the ball is changing direction.