Prof. Cephas David Yandila
University of Botswana
Department of Mathematics and Science Education
Private Bag 0022
Gaborone
Botswana
e-mail: yandilac@mopipi.ub.bwe
tel. 267-71622812
National report:
Botswana has collected and coded data, but there is no report available on how the survey was organised in Botswana.