1. According to Vygotsky's social development theory, learning and development are social processes and children learn best when working together with more knowledgeable others within their zone of proximal development.
2. Instruction should target activities within a child's zone of proximal development where they can learn with guidance from teachers or more advanced peers. Cooperative learning activities can be designed to facilitate this.
3. Scaffolding is a teaching strategy where teachers provide prompts and hints to help students accomplish tasks within their zone of proximal development to promote learning and development.