This activity asked "what do you see?" so when you answer it cannot be incorrect because you are saying what it is that you see. Here are three submissions that came in.
Anna from an unknown school in Canada sent in her views
i think that all of the shapes are a rectangle but they are cut into different shapes and sizes.
Shaurya from the United World College of South East Asia East Campus in Singapore
wrote that each square 2/3 and 1/3s
Giles also from the United World College of South East Asia East Campus Singapore, Tampines
saw it that each square is separated into 1/3 and 2/3'ds