Ever wondered how fast a rocket blasts off, or how much material is needed for a perfectly curved skateboard ramp? These are just a few questions that calculus, the math of change, can answer! Calculus is a branch of mathematics that helps us understand changes between values that are related by a function. It’s divided into two main parts: differential calculus, which deals with rates of change and slopes of curves, and integral calculus, which deals with the accumulation of quantities and the areas under and between curves. Imagine you’re driving a car; calculus helps you figure out how quickly you're accelerating and the total distance you've traveled.