How long, how fast, how hot, how heavy?

Feet and meters, pounds and grams Hours and months and days.

How did we come to measure things In so many different ways?

It all goes back to long ago, In many ancient lands, When people began
to measure With fingers, feet, and hands.

They measured time by shadows, And with dripping water clocks. They
measured years by seasons. They measured weight with rocks.

So that is how it started, And oh how far it went! For now we have a
hundred ways Of doing measurement!