**Dash**:

*[as Bob helps him with his math]*That's... not the way you're supposed to do it, Dad.

*[turns his book around]*They want us to do it this...

**Bob**: I don't

*know*that way! Why would they change math?

**Dash**:

*[as Bob talks over him]*I think it's okay, Dad...

**Bob**: Math is math.

*[sternly]*

*Math*is

*math.*

Dash : [as Bob helps him with his math] That's... not the way you're supposed to do it, Dad. [turns his book around] They want us to do it this...
Bob : I don't know that way! Why would they change math?
Dash : [as Bob talks over him] I think it's okay, Dad...
Bob : Math is math. [sternly] Math is math.

http://www.moviequotedb.com/movies/incredibles-2/quote_48679.html