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Interactive Data Representation Hub: quizzes on binary, decimal, hex, two’s complement, media sizing, with instant feedback—engaging GCSE-level learning. This resource is a single-page hub linking ten interactive HTML5 quizzes covering every core data-representation topic . Each module blends clear learning objectives (“scenario”, “topic-summary” and “advice” sections) with hands-on practice questions and built-in calculators for conversions and file-size computations . Every question delivers instant, color-coded feedback—green for correct, red for incorrect—with a detailed step-by-step walkthrough and model answer revealed immediately after submission . A running score, progress bar and attempts log motivate learners to improve, while radio-button options and responsive design ensure accessibility on any device. Topics span all GCSE-level data representation: Number systems: binary↔decimal↔hexadecimal conversions with practice quizzes and calculators . Two’s complement: mastering signed-number conversion and arithmetic, with visual highlights and working examples . Media fundamentals: calculate image, sound and video file sizes based on resolution, sampling rate and bit depth, reinforcing understanding with real-time calculators . Vector vs raster: test knowledge of graphic file types and storage needs in a dedicated quiz. Designed for both self-study and classroom use, this hub transforms revision into an engaging, interactive journey—building confidence through instant feedback, rich explanations, and progressively challenging exercises. Perfect for GCSE students aiming for top grades and beyond, it’s the ultimate toolbox for mastering data representation.