Here is a great piece from the BBC and also on the Tutor2u blog. During the late 1980s and early 1990s, the price of everything in Brazil went up at least once a week and usually several times – in fact inflation was just under 3,000% in 1990. With this is mind shop owners colour-coded certain items that they felt wouldn’t sell straight away. With CD’s, for example, it was easier to update the colour-coded chart than to change price-tags on every item. Of course, all this changed abruptly in July 1994 with an inflation-busting economic plan that included the introduction of Brazil’s current currency, the real. Click here for the full article.