We read a story about two teddies who packed their rucksacks and set off on an trip to stay in the woods.  But on their way it started to rain and all the arrows that were guiding them washed away.

“The problem was that the signs washed away

They weren’t much good on a wet, rainy day!

What could we use to make a good sign?

One that would be useful come rain or shine…”

So we had to do an experiment to see what would make the best arrows and we decided that the chalk marker was the best because it was easy to see and the rain didn’t wash it all away.