References
- Collins , A and Halverson , R . 2009 . Rethinking education in the age of technology , New York : Teachers College Press .
- Feurzeig , W , Papert , S.A and Lawler , B . 2011 . Programming-languages as a conceptual framework for teaching mathematics . Interactive Learning Environments , 19 : 487 – 501 . [with a preface by Bob Lawler]