What's the first musical instrument? Then Josie sings a song explaining it's the human voice.

George agreed to move Betsy's xylophone to school for her but knocked over the keys to the xylophone. George needed to put the keys in order but can only count to 12 but there are 15 keys. He uses key size and the clock to help him put the keys back.

When understanding derivatives, individuals learn about the power rule. Continuously, the power rule is used with integrals. This video explains how to find the "backwards" of a derivative to find the integral using the power rule. This also incldues an explanation of integrals of trigonomic functions as well as e.

Square One TV shows kids how to properly round numbers. Mathematics R US offers a rounding service for their customers. They offer a special price in exchange for rounding numbers to the nearest tenth.

An example of how using independant data decreases degrees of freedom.