Διαδραστικά μαθησιακά αντικείμενα για τη διδασκαλία της αναπαράστασης της πληροφορίας στον υπολογιστή
Interactive learning objects for teaching computer information representation
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Keywords
Εκπαιδευτικό λογισμικό ; Μαθησιακά αντικείμενα ; Αναπαράσταση πληροφορίας ; Διδακτική Πληροφορικής ; Διαδραστική μάθηση ; Bit και byte ; Ψηφιακά δεδομένα ; Educational software ; Learning objects ; Information representation ; Computer science education ; Interactive learning ; Bits and bytes ; Digital dataAbstract
This bachelor dissertation concerns the design and development of interactive educational software for teaching fundamental concepts of information representation in computers. The software is mainly intended for lower and upper secondary school students who encounter concepts such as bits, bytes, binary number representation, character encoding, pixels, digital sound, and data compression for the first time.
The deliverable consists of five interactive learning objects. The first one supports the understanding of bits, bytes, and binary representation of decimal numbers. The second focuses on character encoding by connecting each character with its decimal code, 8-bit binary representation, and memory locations. The third explores the relationship between image resolution, color depth, and uncompressed image size. The fourth presents digital sound through sample rate, bit depth, channels, and uncompressed audio size calculation. The fifth introduces data compression through Run-Length Encoding, decompression, and the selection of an appropriate compression strategy.
The application was implemented with HTML, CSS, and JavaScript, without external dependencies, and supports Greek, English, and German. The pedagogical approach is based on active exploration, immediate feedback, and visual connection of abstract concepts with concrete forms of data storage and processing.