Cognitive work with a passing game on 4 squares

Mark out an area of about 30x30m then place 4 squares in each corner of 10m on each side using cones. Then place 4 players per square with one ball per group of players. Assign a number (from 1 to 4) to each player in each group. Thus, in each group, there will be a No. 1, a No. 2, a No. 3, and a...