Well I might as well start off as I mean to go on....playing devil's advocate!!!!! I'm not one of those early years trainers who believes that just because we've been doing something for 30 years means its still necessarily the way to still do it!
How many planets are there in our solar system?
It might seem like a simple question .......the answer is 8. But it used to be 9!! In 2006 scientists reclassified Pluto and deemed it was too small to be a planet.
If you answered 9, I'm sure youre not alone (I even had to go into my little boys Primary school today and point out their error in the reception theme on space!!!)