Clements, M. A. (Ken).

Abraham Lincoln's cyphering book and ten other extraordinary cyphering books by: Ellerton, Nerida F.; Clements, M. A. (Ken).; SpringerLink (Online service) (Electronic resources)

Using design research and history to tackle a fundamental problem with school algebra by: Kanbir, Sinan.; Clements, M. A. (Ken).; Ellerton, Nerida F.; SpringerLink (Online service) (Electronic resources)