## Mathematical Nonsense

My daughter is a fan of the “If you give a x a y” childrens books. We checked out Time for School, Mouse! from the library, and I got to this page and was immediately curious. Some of the expressions seem well formed, like $128\pi + \measuredangle N-\phi$, others seem like nonsense, $09z = X +\sum (\approx )\psi$. Anyone recognize anything familiar in there? Could this be an instance of math-washing, using the veneer of mathmatical coolness for one’s own non-mathematical ends?