Programmed control systems are ubiquitous in the present-day world. In current educational practice, however, these systems are hardly being addressed, and little is known about children’s spontaneous understandings about such systems. Therefore, we explored pupils’ understandings prior to instruction in three concrete settings: a car park, an elevator, and an autonomous robot. We analysed written responses from 49 Grade 3 (aged 7 to 10) and Grade 6 pupils (aged 10 to 13) to assess their understandings from two perspectives: the user and the system programmer perspective. Results indicate that most pupils were capable describing programmed systems from a user perspective point of view but found it hard to describe the system programmer perspective. Substantial differences were found between the contexts. The car park context evoked richer descriptions for the user perspective and the system programmer perspective in comparison to the elevator and autonomous robot contexts.
LINK
Conference poster Digitally controlled systems, such as elevators, washing machines, and traffic lights, are ubiquitous in children's present-day world. However, in current educational practice, such systems are hardly being addressed, and little is known about children's initial understandings about such systems in concrete situations. Therefore, we explored grade 3 and grade 6 pupils' understandings of digital control systems in the contexts of a car park, an elevator, and an autonomous robot. We interviewed 48 pupils to explore their initial understanding of the system at hand from the perspectives of the user, the computer, and the programmer perspective. The interviews were analyzed through a directed content analysis. Results from three perspectives and three contexts are described.
LINK
Droop control is used for power management in DC grids. Based on the level of the DC grid voltage, the amount of power regulated to or from the appliance is regulated such, that power management is possible. The Universal 4 Leg is a laboratory setup for studying the functionality of a grid manager for power management. It has four independent outputs that can be regulated with pulse width modulation to control the power flow between the DC grid and for example, a rechargeable battery, solar panel or any passive load like lighting or heating.
DOCUMENT
