Numbers Level 1: What Is a Number?

What is a number, and where did numbers come from? This course starts with a shepherd matching pebbles to sheep and ends with a question philosophers still argue about. On the way it meets counting, the numerals we write, zero, ones and tens, the number line, numbers below zero, adding, taking away, multiplying, sharing, fractions, decimals and percent. It is for anyone: a curious child or an adult who never liked maths at school. Every idea is shown in pictures first and explained, not just stated, so you see why the rules work. You need only things from home - coins, buttons, a sheet of paper and a ruler.