show-and-tell
/ˈʃəʊəndˈtel/noun
mass noun
- chiefly N. Amer. a teaching method, used especially in teaching young children, in which pupils are encouraged to bring items they have selected to class and describe them to their classmates〈主北美〉“展示和讲述”课（尤用于教小孩： 让小学生将他们所选的物品带到教室, 并向其他同学描述）。