What is constructivism learning

How is Constructivism used in the classroom.
In a constructivist classroom, students are encouraged to use prior experiences to help them form and reform interpretations.
The democratic and interactive process of a constructivist classroom allows students to be active and autonomous learners.
Using constructivist strategies, teachers are more effective.

The constructivist theory is based around the idea that learners are active participants in their learning journey; knowledge is constructed based on experiences.
As events occur, each person reflects on their experience and incorporates the new ideas with their prior knowledge.
Learners develop schemas to organize acquired knowledge.