This is a simple pairwork exercise aimed at revising classroom vocabulary and some basic colours.
The classroom vocabulary:
Pupils work in pairs, they shouldn't see each other's worksheets. One of the pupils names the colour of the item, their partner colours the item:
P1: The schoolbag is black.
P2: The sharpner is purple.
Afterwards the pupils compare their worksheets (ideally they should be the same :) ).
The same be done in one-on-one activities, where the teacher will play the role of the partner.