Science Level 1: How Does Science Work?

How do scientists know that continents move, that a heavy ball and a light one fall together, or that there is a planet nobody had seen? Not by being cleverer than everyone else, but by a way of finding out that anyone can use. This course is about that way. It is for anyone, with no maths and no lab coat. Short lessons start with looking carefully, making a guess you can test, and saying what should happen if it is true. Then come fair tests - one change at a time, a group to compare with, letting chance choose, hiding the labels, trying many times - and what makes an explanation good, or empty. Then models, theories and predictions of things nobody had seen; how scientists check each other's work and catch their own mistakes; and how science changes its mind, from the Sun in the middle to Einstein. It follows Logic Level 1 and Knowledge Level 1, but you can start here. You need only a notebook, a few things from home and the world around you.