Dear Tool Users,

Today we’ll measure angles. Anytime we measure, we must be accurate and precise, but we must always keep in mind that measuring is always an approximation. The most difficult thing about measuring is deciding what unit to use and how to report your measurement. How precise do you need to be? A lot of that depends on what you’re doing with your measurement.

Tools are important. Civilization is the story of humans using tools to change their environment and make it more liveable. The history of science is the story of humans combining ideas about the world with the tools they’ve created to test those ideas.

“In every human culture, the hand and the brain work together to create the style that makes a civilization.”–Freeman Dyson

Sincerely,

Mr. Heimbuck