The document discusses the origins and development of the scientific method. It notes that Aristotle made observations and conclusions without testing his ideas experimentally. Galileo is considered the first true scientist because he tested Aristotle's idea that heavier objects fall faster by dropping balls of different weights from the same height, discovering they hit the ground at the same time. This showed the importance of experimentation over just thinking about ideas. The document then defines key aspects of experiments like variables and controls.

1. Scientific Method

11. Review