Watch this video about co-ordinates: https://www.bbc.co.uk/bitesize/topics/zgthvcw/articles/z96k9qt#:~:text=A%20point%20on%20a%20grid,of%20steps%20up%20or%20down.
Look at this treasure map and answer the questions below:
Draw your own treasure island on square paper (or draw a grid).
Add some objects and write down their coordinates.
Try some of these maths games
Go through this powerpoint and try some of the activities attached