South African Learners’ Conceptual Understanding about Image Formation by Lenses

South African Children's Understanding of AIDS and Flu: Investigating Conceptual Understanding of Cause, Treatment, and Prevention.

The present study examined children's understanding of illness in a peri-urban community in South Africa where AIDS is prevalent (N = 138). Results suggest that children were surprisingly knowledgeable about AIDS at an early age, and may have even erroneously analogized from AIDS to the flu. Furthermore, all age groups attributed different causes for AIDS (transmitted by blood) and flu (casual ...

Association between South African high-school learners’ knowledge about tuberculosis and their intention to seek healthcare

Background South Africa has one of the highest prevalence of tuberculosis (TB). Addressing awareness among school learners on TB transmission and prevention may assist in reducing the disease burden. Objective We report on factors associated with high-school learners' intentions to seek healthcare for TB. Design A survey testing TB symptoms, transmission, prevention knowledge, and intention to ...

Image formation by bifocal lenses in a trilobite eye?

In this work we report on a unique and ancient type of eye, in which the lower surface of the upper calcite lens units possessed an enigmatic central bulge making the dioptric apparatus similar to a bifocal lens. This eye belonged to the trilobite Dalmanitina socialis, which became extinct several hundred million years ago. As far as we know, image formation by bifocal lenses of this kind did/d...

Informing South African Students about Information Systems

At the University of Cape Town, females and students disadvantaged under the previous South African apartheid education system are under-represented in Information Systems (I.S.) classes. This research shows that these are also the groups most ignorant about I.S. at the school-leaving stage. After being informed about the discipline through a small intervention, a significant increase in enthus...

Understanding By Conceptual Inference