Transformation of f(x) = x^2

What stays the [b]same[/b] and what [b]changes[/b] when you move the sliders controlling the variables a, p and h? Can you explain why?[color=#b20ea8][/color] Move the variables - then hide the function, challenge a partner to guess the function.

[color=#0a971e]Created by N.Trubridge[/color]