For the first few times for a student is acceptable. Table is made visible. Teburu no ue. Teacher should check their understanding before they take off the helmet. Teacher hands red and black boxes to an able student and gestures for them to place the boxes.
Teacher responds by describing the situation in a full sentence.
Repeat once and then wait for student to move. All students take a turn. This is essential for developing conversation and expediting the lesson. However, teaching patterns and structures of forming questions in Japanese is beyond the scope of time available for this experiment. Therefore, in this case only, the translation of the sentence is given to the students.