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Die onvoltooide bereiking van die konkreet–operasionele denkvlak as oorsaak van leerprobleme in wiskunde vir die primêre skool
(Potchefstroom University for Christian Higher Education, 1975)
This study has been undertaken to try and find an answer to the problem of underachievement and the failure rate among the pupils in the junior primary phase of education. It has been aimed mainly at showjng that cognitive ...