Definition: A system for computation using letters or other symbols to represent numbers, with rules for manipulating these symbols.

Alright class, settle down and let’s take a peek, At algebra, a subject that you need to seek! The dictionary gives us a helpful clue, "A system for computation – it's true!" Think of numbers, dancing in a row, But sometimes they’re hidden, don’t you know? Algebra uses letters, bright and bold, Like 'x' or ‘y’, stories to unfold. These symbols stand for numbers yet unseen, A secret code, a mathematical sheen! We use rules to play with these symbols free, Just like adding, subtracting, you agree? It’s about finding values, neat and precise, Using symbols cleverly, oh so nice! So algebra's not just sums, it's more than that you see, It’s a way to solve problems, beautifully! Does that make sense, my clever crew? Any questions popping up for you?