I wrote this piece of code to explain the working of Binomial Theorem to a younger friend. Thought it would be useful for other students too.
I built a class that could take names of two variables, like 'a' and 'b' and the power and sign (+ or -). It will then evaluate the terms using the Binomial Theorem. Students can get an understanding of the Binomial theorem as well as some programming concepts like recursion, encapsulation, data abstraction etc.