You challenge for today is to make a map.
Look at my you tube channel for instructions. 

Use Google earth to print out an arial photo of your house and garden. Make sure the north arrow is at the top and you are directly above the garden and house.
Then measure something in your garden you can see on the photo.
Measure how big it is on the map and then how big it in on the ground in real life.
1cm : 4m
I chose my driveway which is 1cm on the map and 4cm on the ground.
But these two figures use different units so we have to convert them to the same unit.
4m = 400cm
So on my map 1cm is the same a 400cm on the ground.
That gives my map a scale of 1:400. My map is 400 times smaller than my grounds and the grounds are 400 times bigger than my map.

Now you have a scaled map you can look at other parts of your garden you can measure. The fence, the sides of the house and check them against your map to see if the scale is right.
Once it is checked then you can write the scale on the map and you can use it for making a treasure hunt.

Don’t forget to Tweet your maps or photos on Twitter #NatureDays or comment on the Nature Days facebook page.