Alethiological Puns: The Punception

Why was the math book sad?

Because it had too many problems.

Why was the math book sad?

What do you call a group of cows playing instruments?

A moo-sical band!

What do you call a group of cows playing instruments?

Why did the scarecrow win an award?

Because it was a-maize-ing!

Why did the scarecrow win an award?
Why was the math book sad? What do you call a group of cows playing instruments? Why did the scarecrow win an award?