Erkan Malcok https://erkanmalcok.com/ Data science and computer science education. en-gb Tue, 01 Sep 2026 22:05:22 GMT Debugging as a teachable habit. https://erkanmalcok.com/articles/debugging-as-a-teachable-habit/ https://erkanmalcok.com/articles/debugging-as-a-teachable-habit/ Tue, 01 Sep 2026 12:00:00 GMT Debugging is not a remedial afterthought. This piece treats it as core computing thinking: reproduce, narrow, hypothesise, test, and learn from failure. Fluent answers are not understanding. https://erkanmalcok.com/articles/fluent-answers-are-not-understanding/ https://erkanmalcok.com/articles/fluent-answers-are-not-understanding/ Tue, 01 Sep 2026 12:00:00 GMT A fluent AI answer can look like competence. This piece separates linguistic fluency from understanding, and what that distinction means for teaching and assessment. LLM fluency is not reasoning. https://erkanmalcok.com/articles/llm-fluency-is-not-reasoning/ https://erkanmalcok.com/articles/llm-fluency-is-not-reasoning/ Tue, 01 Sep 2026 12:00:00 GMT Large language models produce fluent text with remarkable consistency. This piece separates linguistic performance from reasoning, understanding, and reliable truth. Measure before you optimise. https://erkanmalcok.com/articles/measure-before-you-optimise/ https://erkanmalcok.com/articles/measure-before-you-optimise/ Tue, 01 Sep 2026 12:00:00 GMT Dashboards and metrics are easy to collect and hard to interpret. This piece argues for measuring the right thing before improving what is merely visible. Productive struggle in learning. https://erkanmalcok.com/articles/productive-struggle-in-learning/ https://erkanmalcok.com/articles/productive-struggle-in-learning/ Tue, 01 Sep 2026 12:00:00 GMT Difficulty is not always waste. This piece explains productive struggle, when to preserve it, and how instant help from AI can remove the work that makes learning stick. Recursion without mystery. https://erkanmalcok.com/articles/recursion-without-mystery/ https://erkanmalcok.com/articles/recursion-without-mystery/ Tue, 01 Sep 2026 12:00:00 GMT Recursion becomes clearer when you separate the base case, the recursive step, and the trust that smaller subproblems are already solved. A short guide with Python examples. Teaching computing beyond syntax. https://erkanmalcok.com/articles/teaching-computing-beyond-syntax/ https://erkanmalcok.com/articles/teaching-computing-beyond-syntax/ Tue, 01 Sep 2026 12:00:00 GMT Pupils can write working code and still miss the idea. This piece argues for teaching computing as explanation, structure, and judgement — not only correct output. Bellman–Ford, explained clearly. https://erkanmalcok.com/articles/bellman-ford-algorithm/ https://erkanmalcok.com/articles/bellman-ford-algorithm/ Wed, 26 Aug 2026 12:00:00 GMT A clear guide to the Bellman–Ford algorithm, including relaxation, negative edges, negative cycles, complexity, and a Python implementation.