The children of 5T have been exploring such deep questions as: "Which came first, the chicken or the egg?" It turns out that the chicken won in a time of 18 minutes 22.7 seconds, while the egg never left the starting grid - a bit of a let down, after all the anticipation.
Still, here are some photos of (what we refer to as eggs but strictly speaking are not - ask year 5) with their shells having been dissolved away in acid. (Don't worry, we only lost one finger nail, a lime green coloured pencil and a small number of nostril hairs in the process. The corrosive fumes have now totally dissipated.)