How many grains of sand are there in the world?

A past Oxbridge question for Chemistry was "How many grains of sand are there in the world?" What a great question! It's another "wonder question" (see my previous post an another Oxbridge question here ). I love helping students prepare for Oxbridge and other university interviews because it gives me a chance to see bright young minds grappling with areas of life they've never thought about before. It's a chance for them to grow, and a chance for them to learn that it's OK to do what I call "intellectual talk" - talking about ideas seriously because ideas matter. My ' Nurture Your Uni Dream ' programme coaches students through choosing the right university course at the right universities, and if a student is in Year 10 or above it's quite appropriate to start thinking about this. Contact me to find out more here.