P-derivation

P-derivation is a way for kids to learn more about math. It's like a game that you play with paper and pencil. You start by writing down a math equation, like 2+2=4. Then you add in a variable, like x, and change the equation to something like 2+x=4. By changing the equation, you can figure out the value of x. You can continue doing this to different equations, so you can keep learning more about math.