有天，兩位一起進行注音賓果工作，一位四歲半，一位三歲半。
工作開始前，兩人用猜拳決定抽取注音符號卡片的順序。
剪刀、石頭、布，四歲半的孩子贏了。他想了一下，決定再猜一次。
這一次，他告訴三歲半的孩子：「等一下你出石頭，我會出剪刀。」
兩人於是猜了第二次拳，這次是三歲半的孩子贏了，因此由他開始抽注音符號卡。
混齡的教室，經常能激發大孩子關顧、愛護小孩子的心。彼此幫助，是蒙特梭利教室的常態。
One day, two children are doing Chinese phonetic alphabets bingo together. One is 4.5 years old, and the other one 3.5 years old.
They decide who goes first by playing rock, paper, scissors.
In the first round, the 4.5-year-old child wins. After a few moments of thinking, the winner asks the other child to play rock, paper, scissors again.
This time, the 4.5-year old child tells the younger ones what they shall do: "You play rock, and I will play scissors."
Hence, the 3.5-year-old child wins in the second round.
The older children are naturally stimulated to care for the younger ones in the mixed-age classrooms. In Montessori classrooms, mutual assistance is the norm.