THE IDEAS OF FIFTH AND SIXTH GRADE PUPILS FOR THE PHENOMENA OF GEOMETRIC OPTICS (original) (raw)

We investigated the ideas of children for the propagation of light, shadows, mirrors lenses. We found in some questions differences between boys and girs The ideas we investigated related to the following phenomena: • Shade formation • Darkroom-pinhole camera • Reflection of light • Refraction of light • Properties of Lenses • Creation of virtual images from plain mirrors, lenses. These ideas are interrelated. For example, the child's idea of shadow formation is related to the idea that the student has of light. a) Formation of shadows Ravanis and Papamichael (1994) described four forms of representation for the natural causes of the formation of shadow: 1. The shadow of an object is considered to be due to the object, but also by an external cause in relation to the object, for example the night, the shadows of trees, etc. 2. The shadow is due to the object without any relation to the light and without doing any prediction of where the shadows will be formed.

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