Weather vanes are often decorative, but of course they also suit a useful purpose! Here's an illustrated poster to share with the children.
Weather Vane Poster
Measuring the rain in the UK can be very rewarding - at least you won't have to wait too long to get a result! Here are instructions for making a simple homemade rain gauge out of a plastic bottle - perfect for your experiments in measuring the weather.
Here is a brilliant scientific craft / experiment - making your own anemometer out of paper cups and sticks, and them learning how to measure the wind speed. You will end up with a very rough answer but a good understanding of how a real anemometer works!