Sequence is like when you line up your toy cars in a special order, from the smallest to the biggest. Each car has its own spot, and they follow one after the other, just like the steps you take when you walk. If you mix them up, the order changes, and it’s not a sequence anymore.
Think of sequence like a storybook. First, you have the beginning, then the middle, and finally the end. Each page follows the one before it, telling the story in the right order. If you read the pages out of order, the story might not make sense.
Imagine a sequence as a train with cars connected one after the other. The train goes from the first car all the way to the last. If you take one car out and put it somewhere else, the train isn’t in the right order anymore.
A sequence is also like a song. You start with the first note, then the next, and the next, until the song is finished. If you play the notes in the wrong order, the song sounds different.