"Estimation, measuring, art, display, statistics and numerous possibilities to show off some Maths"This activity is inspired by "Of All The People in All the World" from "Stan"s Cafe". Use grains of rice to represent different numbers of people! How can we make a pile of rice with 1,000,000 grains in it? Show the number of people per square kilometer in Macau next to that in Australia? How many millionaires are there...