An exploded-view drawing is like taking apart a toy, but instead of actually breaking it, you draw a picture of each piece separate from the others. It's like making a map of all the different parts of something so you can see exactly how everything fits together. It's like a puzzle, but instead of putting the pieces together, you take them apart one by one and draw them separately.
Imagine you have a toy car. If you were going to make an exploded-view drawing of it, you would start by drawing the whole car, but with dotted lines showing where each piece comes apart. Then, you would draw a picture of the wheels, the body of the car, the seats, the engine, and each individual part of the engine, such as the transmission, the pistons, and the spark plugs.
When you look at all the pictures together, you can see how everything fits together to make the whole toy car. It's a way of showing how complex things work in a simple and easy-to-understand way.