density

Is a gold medal really gold?

The story

There is no doubt that the gold medals for the London Olympic games are beautiful but how much gold is actually in them?

This is might well be the first of a few Olympic themed postings over the coming months. I wanted to come up with some ideas that were a bit different and unusual so this is my first offering: an  enquiry lesson to use when teaching metal properties or density or just as a way of practising maths and science skills. More

Xin Nian Kuai Le!

Image: Takeaway (wikipedia commons)

(or Happy New Year!)

The story

Thursday (3rd February) will be the start of the Chinese New Year.

On this night will be a full moon (good night for moon-watching) and the celebrations will end 15 days later when the lunar cycle is halfway through and there will be a new moon (not such a good night for moon-watching). More