zone of proximal development

例句：

1. 1.The zone of proximal development is where children learn best.
   发展区是孩子们学习的最佳区域。
2. 2.Researchers are exploring the zone of proximal development to understand how children learn.
   研究人员正在探索发展区，以了解儿童是如何学习的。
3. 3. The teacher used the zone of proximal development to help the students understand the material better.
   老师利用发展区帮助学生更好地理解材料。