Twister sheet and several peices of card with numbers 1-4. Photos or postcards of lardmarks for your local area.Map or local area.
Place postcards or photo's onto each twister spots. Then intoduce the first steps of grid references of "along the corridor and up the stairs". Each Child picks 2 cards with numbers on. The first is the along the second is the up. They collect the postcard and looking at the back you will have written the grid refence from the local area map. So they can again look up where the picture was taken.