Assessment has been defined as an authentic method that plays an important role in evaluating students' learning attitude in acquiring lifelong knowledge. Traditional methods of assessment including the Computer-Aided Assessment (CAA) for mathematics show limited ability to assess students' full work unless multi-step questions are sub-divided into sub questions. This issue persisted significant drawback especially within the notion of method marking approach. To address this issue, the aim of the study is to develop a methodological framework that will create an information and communications technology (ICT) artefact prototype. The prototype (termed as method marking assessment (MMA) artefact) implements a method-marking assessment concept to assess through multi-step questions. Extensive literature reviews have revealed that there are features in common between complex-problem solution characteristics and multi-steps questions assessment using ICT; therefore complex problems paradigm is used in the study for developing the MMA prototype.
For the past few years, we have run a highly successful activity teaching some elementary digital image processing to students at years 9 and 10 of secondary school. The activity involves working with a digital camera, taking, capturing and saving images, and exploring pixel values and their relationship to image brightness and colour. We also perform some elementary processing tasks: thresholding, changing spatial resolution and quantization. Students then have a brief introduction to spatial filtering, followed by some examples: image blurring and edge detection. The activity finishes with some binary morphology. Given that digital image processing is usually offered only at the upper undergraduate or postgraduate level, we have demonstrated that it is quite possible to introduce some image processing concepts in a friendly and supportive environment to students in the middle years of their secondary schooling.
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