Hi everyone! I just wanted to know if anyone has any tried and tested methods for teaching the area of compound shapes that are practical? I am teaching a low ability y5 group and have been given some Geo-Boards(?) to use. For this group, they are struggling a little with the concept of how to find the missing side, not fully understanding that if it were a rectangle the opposite sides would be the same length and all they have to do is find the difference. Hope that makes sense?! Any ideas fully appreciated!