References
- Becker , R. F. Rivera . 2006 . Establishing and justifying algebraic generalisation at the sixth grade level In Proceedings of the 30th Conference of the International Group for the Psychology of Mathematics Education J. Novotná , H. Moraová , M. Krátká N. Stehlíková 4 465 72 . Prague, , Czech Republic : Charles University .
- Chua , B.L. and Hoyles , C. 2009 . Generalisation and perceptual agility: How did teachers fare in a quadratic generalising problem? . Proceedings of the British Society for Research into Learning Mathematics , 29 ( 2 ) : 13 – 18 .