This document provides examples of using songs and humor to teach mathematical concepts. It suggests incorporating students' favorite songs into lessons by modifying lyrics to explain formulas, proofs, and other math ideas. Examples are given of songs modified to teach order of operations, dividing fractions, and atoms. Teachers are encouraged to make songs simple, short, repetitive, and fun to help students better retain information. The document also contains math jokes and links to video examples of songs used in math lessons.