to convey their thoughts in a more effective way, they receive more sophisticated feedback, therefore increasing their vocabulary and their speaking skills. Wells gives the example of dancing: when a person is learning how to dance, they look to others around them on the dance floor and imitate their moves. A person does not copy the dance moves exactly, but takes what they can and adds their own personality to it. In mathematics, proximal development uses mathematical exercises for which students have seen one or more worked examples. In secondary school some scaffolding is provided, and generally much less at the tertiary level. Ultimately students must find library resources or a tutor when presented with challenges beyond the zone. Another example of scaffolding is learning to drive. Parents and driving instructors guide driving students along the way by showing them the mechanics of how the car operates, the correct hand positions on the steering wheel, the technique of scanning the roadway, etc. As the student progresses, less and less instruction is needed, until they are ready to drive on their own. The concept of scaffolding can be observed in various life situations and arguably in the basis of how everyone learns. One does not (normally) begin knowing everything that there is to know about a subject. The basics must be learned first so one can build on prior knowledge towards mastery of a particular subject or skill. Implications for educators Various investigations, using different approaches and research frameworks have proved collaborative learning to be effective in many kinds of settings and contexts. Teachers should assign tasks that students cannot do on their own, but which they can do with assistance; they should provide just enough assistance so that students learn to complete the tasks independently and then provide an environment that enables students to do harder tasks than would otherwise be possible. Teachers can also allow students with more knowledge to assist students who need more assistance. Especially in the context of collaborative learning, group members who have higher levels of understanding can help the less advanced members learn within their zone of proximal development. In the context of adults, peers should challenge each other in order to support collaboration and success. Utilizing student's ZPD can assist especially with early childhood learning by guiding each child through challenges and using their student collaboration as a tool for success. Meyer used