1. Skinner, B.F.: Teaching machine and programmed learning (1955).
https://www.youtube.com/watch?v=jTH3ob1IRFo
2. Papert, S.: LOGO Programming language (1972).
https://www.youtube.com/watch?v=5dZMgdqy7zY
3. ICMI Study;RF Churchhouse,1986
4. New ICMI Study Series,2009
5. Mathematics Education in the Digital Era;A Clark-Wilson,2014